MySQL I Really Really Need Help!

So. . . this is really making me mad. . . MySQL is really annoying and stupid. . .
Current Servers
Bungeecord Server is with GGServers
Lobby Server is with rcnhosting
Skyblock Server is with Server.pro
HCF Server is with Server.pro
Faction Server is with Server.pro

The rcnhosting has a section in the multicraft control panel called advance and then it says MySQL Database and when I click on it I get

Host: locahost
Name: server(number)
Username server(number)
Password (password)...

MySQL I Really Really Need Help!