We've fixed the issue witheveryone
vsmembers
but still curious about the password issue.
Was this "real old forum" an old version of phpBB or did you import some other forum software into phpBB?
It was imported from Phorum 5.2 ro phpBB 3.x and the password still worked. It was importing from phpBB 3.2 to Xenforo 2.x where password didn't work anymore
But strange thing is .......
I did log in my account for first time on Xenforo with the same password I had on phpBB then I used the temporary administrator account created during Xenforo installation to make my oringal account a Super Admin and I guess that where all member password when bonkers because I asked the other administrators to sign in their account so I could make them Super Admin on Xenforo. They couldn't sign in with the password they had on phpBB. I had to reset it for them.