@ansen Those are nothing to worry about. So we are back to probably email sending issues. Maybe wpForo team can help you more on this.  

Enable Wordpress DEBUG to a LOG, wait for a few hours (or just post some test topics) and check the DEBUG.LOG in wp-content. Is it clear from errors...

All email functions are handled by Wordpress core and not wpForo. So if your email (out) from Wordpress is considered as spam, it is an email server p...

If you have no errors, then the 2 possible reasons are what i posted. Server or email sending. There are some excellent debugging tools plugins for ...

Since this is a large forum, could be email sending or just some performance of the server and db.

Percy just make sure you do NOT use two optimizers. I see you do. Fastest Cache enabled optimizer and Auto Optimize.

@percysgrowroom I have no what all those are and from where they come from. You use all kind of optimizers, caching (that has also an optimize...

Well what you should do is fix everything (and i mean everything) and FREEZE the technical part. You seem to be in a constant "changing things" state....

@percysgrowroom Try to exclude wp-content/plugins/wpforo/wpf-assets/js from the JS optimizer. Also you may be interested in this (after you re...

Then exclude wpForo assets from the optimizer.

@percysgrowroom it is in the Wordpress wp_options not in wpForo tables.  

@percysgrowroom btw you seem to have some small problems here and there:  2020-02-24-23_55_52.png

If we are talking about links from external sources, i don't see how a backlink can link to a page ID. The link is to the slug.

Robert, he has some SEO plugin (YOAST i think) that shows INlinks # for each page. Apparently he now sees some problem in there. Also he has still a C...