1. Is simple:press just a forum plugin, it won’t effect wordpress theme, right? I mean if I have got a wordpress theme installed on my website such as www.example.com, then I install simple:press, and it won’t effect my homepage and just have a different look at www.example.com/forum , right?
Simple:Press will have no effect on the rest of your website. The forum page itself is still formatted with your WordPress theme it is just the content area of the page that utilises the forum theme. The Wp theme has, of course, much influence over how this displays as well!
2.Is simple:press compatible with WordPress Social Login plugin ?
User registration and login are the domain of the WordPress core and it is WordPress that informs the forum on whether a user is logged in or not. Any login plugin that abides by the WordPress standards and API is just fine.
3.User Identities, I just looked into it , and didn’t find Instagram field, does “Add User Identities” is uesd to add such a field?
Yes you can use the Add Identities plugin. We do have a task in our development list to add some of the more up to date and popular id’s.
4.Do we have any email campaign tools?
No. Simple:Press is strictly a forum. There are other plugins that can provide email tools and we have never felt it worthwhile to re-invent the wheel when good plugins exist. I would refer you to the WordPress plugin repository to find something suitable.