I, too, had this issue on one of my computers, but it worked, somehow, on a different PC. Maybe try reinstalling curseforge/overwolf? It might help.
Edit: I haven't used any different login. I just installed Overwolf and Forge on my other computer. It's probably some sort of glitch/bug that can occur, hence why I suggest reinstalling.
I, too, had this issue on one of my computers, but it worked, somehow, on a different PC. Maybe try reinstalling curseforge/overwolf? It might help.
Edit: I haven't used any different login. I just installed Overwolf and Forge on my other computer. It's probably some sort of glitch/bug that can occur, hence why I suggest reinstalling.