I removed new anti malware software I've recently installed - can't recall if the problem started after installing them, it was "bitdefender" and "malewarebytes"
It didn't helped, however an older wallet I used in the past - MultiBit is synchronizing properly.
is there a possibility that the antialwares introduced some changes to my system that are not allowing electrum to synchronize?

If I'll uninstall and reisntall electrum, could it help?
I never did it, so quick question about it, all I need to get access to my wallet is the seed (12 words), right?
I have a back up of the history, is that mean I could reuse it on my new wallet? meaning that it will add the transaction description?