I also read that Electrum servers are blocked in Russia and only way around is to use Tor.
[... ]then i would agree that your ISP/government doing is blockade.
IMO this is the least probable event.
The problem started to appear yesterday (directly after upgrading electrum).
I am not aware of electrum server not working in russia SINCE YESTERDAY. So unless OP didn't use electrum for a pretty long time, it most probably just is a
dead server or bad network configuration.
OP, when did you use electrum the last time ? Did you ever had such problems ?
Did you change anything inside of your network (firewall, topology, ... ) ?