Problems with w3all plugin for phpbb sync

Hello!

I am facing a problem with the intersection of your plugin with w3all plugin: https://en-gb.ww.wp.xz.cn/plugins/wp-w3all-phpbb-integration/

When the user has 2 factor enabled, then when he logs into the wp, he is shown 2fa dialogue to enter the code. But at the same time he is already logged into phpbb (I can check that by going to the board in parallel and seeing, that the user is logged in). I suppose it’s caused by cookies bypassed earlier to the phpbb.
This causes a strange loop — when user enters the authenticatin code, it won’t let him in, and would show the same field again. And what’s worst, the user can’t enter any other page on the website, whatever page he visits, there is always a 2fa dialogue asking him to enter a code.

Nothing can’t be done, until cookies are deleted or user logs out from the phpbb. But it doesn’t solve the issue that the user can’t see anything else on the page. Hope you would help me with that.