It looks like either minecraft auth servers were down for a bit, or you aren't using paid minecraft, are you using tlauncher or something similar? If so, Minehut doesn't support it.
I know, they've completely screwed up their UI, but if you activate the server, and then click Manage Server, right under the address, theres a button that says "Change Name", just click that.
Votifier can't be directly applied to minehut just yet, the only way to actually add it is to get an external server on a provider with ports allocated, and put votifier on there, then use skript to detect votes and send a msg to discord, then have a skript on your Minehut server see it and give the reward.