Guys, what the hell is happening?!

When trying to configure Grin on grinmint, I get:

[WARN] [2019-01-18T00:21:47+02:00] Get error: End of file, resetting in 5 seconds

When trying f2pool, I get:

 Get error: An existing connection was forcibly closed by the remote host., resetting in 5 seconds

Yesterday at least on grinmint it was working fine? Some help?