Cannot Join LEET Server

I am unable to access my LEET account on the Server App (displayed below) or the Forums themselves (creating an account, logging in, etc). Because of this — or because of minecraft itself — whenever I try to log into my public server, it ends up showing a: Login Error.

The problem is, it was working as of 2:04pm on March 22, 2020. Then it shut down again as it was prior. Please give me some advice!

 

server: HexTrack.pocket.pe

ip: 18139