some troubleshooting i’ve done: 

Clearing out Combinding CSS and Java with the check boxes.

Performing the house keeping tool.. both didn’t work. 

I am very suspicious when things that work one day do not work the next as it virtually always means something has changed. WP theme update; new WP plugin active etc.

First question. Your WP theme is trying to load x2 style images for retina displays on all images. Which – by the way – is slowing down the page load time quite significantly. Have you always had this feature turned on or have you turned it on recently? – I ask this because while it looks like the page has fully loaded it actually has not as it continues to try to load x2 images (when necessary) and times out for each one generating a 404. So the page could look like it has loaded and be unresponsive when in fact it might still be loading.

I have turned it off now, still the buttons or not working properly.. I just purchased the Reputation plugin as well and has the same issue..

99.9% of the time that something like this fails it comes down to a scripting conflict that is killing off the jQuery library session which just stops functioning when it hits an error.

The way to check for this is to open the browsers web console – have it set for errors – load the page and then click the button. This will show any errors encountered in the console. If you are unsure how to use the console it is very easy and this quick guide should help.

Well i checked it out, indeed the retina option of our theme is bugging. Reported that to the builder. 

But i switched it to a default wp theme.. and these are the errors: 

Uncaught ReferenceError: sp_forum_vars is not defined
at Object.success (eval at (sp-forum.js:1), :1:11595)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at y (jquery.js:4)
at XMLHttpRequest.c (jquery.js:4)
www.exclusiveracingseries.nl/:1 Uncaught ReferenceError: sp_forum_vars is not defined
at Object.success (eval at (sp-forum.js:1), :1:11595)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at y (jquery.js:4)
at XMLHttpRequest.c (jquery.js:4)

This is within the forum.. please look at it. 

We had a option that you can Load the Jquery before the website Jquery is loaded.. 

I can also make an account for you if you want to investigate better.

Over on the right hand side it will usually tell you exactly what file the problerm was in. Do you know what it was for the top one?

One more important question however… are you completely up to date with SP and SP plugins? You mentioned recently installing the Reputations plugin. But is your base SP up to date? Any updates pending in the WP dashboard?

Now i don’t know what it is for.. 

All updates are installed, no new updates are in queue. 

But how are you going to fix this then? As i’m not a expert on it and we bought the product? 

Peter Marcus said
But how are you going to fix this then? As i’m not a expert on it and we bought the product?   

How about showing a little patience? And just for the record you did not ‘buy the product’ – it was free to use. Perhaps you have also noticed that I have been replying pretty quickly and attempting to gather information that might point to your problem.

And – once again . if it worked and then stopped without a software change then it is clearly not a problem with the plugin code. Things do not just ‘stop’ like that. So something has changed.

What about the Reputation plugin? Have you tried deactivating that? 

By the way – in between each retry you should cleat your browser cache as it will hold on to the current scripts even if they have changed. Clearing the cache will ensure they are reloaded.

I asked in post 7 about the file name being shown against the first error. This would still be useful information to have and you have not yet provided it.

If all else fails then you suggestion of creating an account we can use i=s probably the next step to take.  So – could you please create an account so that we can log in and see the forum behaviour. Please send a PM to both myself (Yellow Swordfish) and Mr Papa.

It helps if you can include links to not just your forum but also to this topic so we can get to it quickly to re-read what has been said. A brief reminder of the problem is also very helpful.

Finally – I am afraid I am going to have to hand you over to my colleague @mr-papa as I have to leave in a few minutes to cross the country for a family funeral.

took a quick look at your site and no obvious conflicts jump out..  but of course viewing as guest so cant really check out forum since behind paywall…  so not all js is loaded…

as Andy says, really need an account to take a look…

if it was working before as you indicate in first post, would also be nice to know what changed.. it wont just stop working… perhaps wp update or theme update or server update?

I will be back this evening if you can send us the temp credentials as Andy requested…

until then, if you switched wp themes and it still had same problem, you could also do a quick temp deactivation of all other plugins and see if any different… start with the reputation one if its something you just added…  if better, start one by one re activating and see when it breaks… then we can work the conflict if there is one…

also when do you see the error you reported in post #6?  is it just in the console after page load? or does it come up after the forum tool popup is opened?

Sorry about how talked like the last post to you. I just want to be helped and im very happy i get the service from you. Sorry for any misunderstanding here. 

I will P.M. you a WP admin account so you can check out, i’m thinking it’s just a Setting in the Simple:Press forums why it doesn’t work anymore. Therefore we had a checkbox with Loading Java in the header before. Maybe a update in WP caused the problem but the theme was not updated and the same problem occurs in one of the original templates of WordPress. Same as for our admins that can’t delete messages now..  Many (Java) functions are not responding on the clicks anymore. 

Glad that you want to take a look ! 🙂 Many thanks from our club!

Error when admin wants to delete a message: 

 (unknown) Uncaught ReferenceError: sp_forum_vars is not defined at spjDeletePost (eval at (sp-forum.js:1), :1:10029) at HTMLAnchorElement.eval (eval at (sp-forum-events.js:1), :1:5535) at HTMLAnchorElement.dispatch (jquery.js:3) at HTMLAnchorElement.r.handle (jquery.js:3)

Also if you want to Pin a topic: 

VM785:1 Uncaught ReferenceError: sp_forum_vars is not defined at Object.success (eval at <anonymous> (sp-forum.js?ver=4.7.3:1), <anonymous>:1:11595) at i (jquery.js?ver=1.12.4:2) at Object.fireWith [as resolveWith] (jquery.js?ver=1.12.4:2) at y (jquery.js?ver=1.12.4:4) at XMLHttpRequest.c (jquery.js?ver=1.12.4:4)

but if its a setting that is making it not work but was working before, it means something changed…  things wont just stop working.. computers are very good about 0 and 1… 😉

I will take quick look before heading to work this AM…  if nothing jumps out, will be back this evening to look further..

so took a quick look… actually, many of the forum tools are working just fine… even sent you a notice via them… but some, like delete post, are not…

some very odd things going with js on that site… especially with iphorm stuff… its loading its js twice it appears…  this could be causing issues… have you tried with the plugin disabled?

also, you have some set up issues… 

for example, you told the forum to compress its css and scripts for speed… however, your site is not doing that…  its because you have several issues with permissions or lack of directories being created…  please see the forum – integration – storage locations admin panel and work to rectify those errors on that page…  either the permissions on the folders listed are incorrect (dont exist) or the permissions are such they are not accessible…

oddly, when I moved the forum js to the footer, a bunch of js (including the iphorm ones) moved to the footer which is quite odd..  it should not have any dependency on the forum js (it must work when forum not there)…  it shouldnt move with the forum js…  might be nothing but an oddity…

so please resolve the storage location errors and will check back this evening…