ayushnsit on "[Plugin: bbPress] 404 Error while accessing Forum topics"

Hi, I had installed bbPress to create forums. Until yesterday, when someone made the first post in the forum, they were accessible.
Last night I hastily upgraded to WP 4.5, without checking the compatibility of the plugins.
And now there is a 404 error whenever someone makes an attempt to access the forums.
I downgraded the WP to 4.4.2 using FTP.
But the issue still prevails..
Help me! Website

I unchecked the Prefix all forum content with the Forum Root slug (Recommended) and it works now! Does not work if I again check that box.