Can't log in my facebook.

Hi everyone.

My facebook profile was disabled for few days, but fortunately i got it back. My account works perfectly in safari, but the Messenger + Facebook apps are not working. Always got the " an unexpected error occurred. please try logging in again". I reinstalled the apps, hard resetted the phone, set back the network settings etc. Some people say, if you doing a full factory reset and choose the "new iphone" option,it works, but I don't want to erase my phone for this, so please help if you have any idea for this.

Thank you,

Dániel