I'm trying to post a server, but it always says: Failed to connect. Please check your input.
I've already posted the server on other server hosting websites, and it is working without problems. However, I cannot select a server version higher than 1.8.1 (the server is on 1.9), which I think may be the cause. Is there a way to choose a 1.9 snapshot and/or fix the test connection thing?