Redirect to Admin php file after log in
Fix your page issues:
Here could be the cause of the issue, Optimizers:
Everything was working together with cache plugin, I was getting this issue even before recent updates to s2member and wordpress itself, did not have time to write a topic to ask.
This is what I observed in the link, but not sure from where it adds that redirect.
Other thing, the /wp-login.php page is active even with enabled feature, Replace WP login Page url to wpForo url.
I think it must disable this login method with that feature or not?