Transfer has happened for Curseforge (main site at least and this forum)
Things might have changed though!
Please take a look at your account on there. If it is ForgeUser_<random stuff here> then please start watching this thread!
If you have the ForgeUser stuff then you did not opt-in/out for the transfer to Overwolf. Can get fixed though.
Will update you all here when a solution has been implemented.
Okay, will be after the 3th of December!