I made the website locally using Local and uploaded it to my Plesk server using All In One WP Migration plugin.
When Bricksforge is active, admin does not work. I have a redirect from WP-admin going to WP-login and this fails when BF is active.
(I’m seriously bad at explaining)
Happy to provide login if needed.
Did you change the Login URL via the Bricksforge Backend Designer? If yes, this could be a reason for that.