I'm now renting 82T for about 72 hours using port 3333. I did see the too low error message for about 30 minutes, but now everything has level out.
The default port should scale to any hashrate. Port 4334 won't go below 1 million and is purely for shit rental services that limit connections to 1M+
Hmmm I wonder what service does that. (just kidding I know just who it is)