I suspect that (maybe) your photo that you want to put as your pfp is either too big (or large) or too small, I suggest you trying to put a different picture, just to see if it happens again. If it does, tell me, and I will try another solution.
I tried that and it saysss.... U nEeD a MoDeRaToR tO aPrOvE thIs CommEnt. So basically I can change my profile on my other account but I can't comment even after verifying my email