I have the same problem. You are saying we have to buy a VPN service to play this game? That's ridiculous.
He's just making a suggestion for a potential solution to try, that we've seen work before for other people. Sometimes the Cloudflare DNS service is grumpy. That doesn't have to do with Raid actually, it just prevents you reaching the server for some reason.
I use Windscribe, which is free for I think 10gigs.
There are a few other suggestions I can make that might help if that doesn't work. But they are just going to be suggestions.