[Help With connecting external server]

Hi

I connected my external server to minehut but it just says failed to verify username i can see the motd and can login into the minehut waiting screen but when i click the continue it just brings me back to minehut lobby and says failed to verify username. this the console [17:06:28 ERROR]: Username 'Omegartlx' tried to join with an invalid session

[plugin broken]

The plugin is installed and in the first restart it is fine but then on the second they are in file manager but don't work