▪︎ Are you using Proxy?
No, never used it.
▪︎ Are you trying to play at home/work/school?
Playing at home.
It could also be your provider blocking the game, which case you could try contacting your internet provider to try and get it unblocked as seen in this post
You could also use a VPN although you should check you're allowed first.
This is not the first time I play this game, never had any connections issues. This started to happen after de update this week.