have you given the users permission to subscribe? please check your permissions…

Ok, I see that as a setting now in Permissions —-> Manage Permissions.

I’m admin though – shouldn’t I have permission for everything?

Also, where would one find a general how-to for each and every plugin? It seems they all require individual settings/massaging, for example, the info here: http://codex.simple-press.com/codex/plugins/our-plugins/available-plugins/subscriptions/ on the Subscriptions doesn’t mention the Permissions issue and the settings page for the plugin at Components —> Subscription doesn’t either. I’d hate to have to come here and ask a silly question every time I install a plugin. 

Those codex plugin pages are the best bet… We just added the stuff that is there in the last week or two (thanks BrandonC!)… so still trying to complete and will improve…

Your comment about plugins with permissions saying so in the codex is a good, fair point…

Yes, admins will be able to subscribe at will without a permission… however, there was an issue with admin permissions in some plugins with the 5.1.3 release… all the affected plugins but subscriptions have been updated… subscriptions has not because it had another change already in it that is dependent on 5.1.4 core… that simple press version and the updated subscriptions plugin will be updated tomorrow or saturday…

If you want to fix in the interim, go to your database, the sfauths table and find the row for the auth_name f subscribe… and make sure the admin_negate column is set to 0…

Mr Papa said Your comment about plugins with permissions saying so in the codex is a good, fair point…

Yes it is. The permission info about subscriptions is now in the codex. @Michelle-Thanks for mentioning it.