Try Resetting the Server if no valuable "things" are left..
or Download the world and Reset the Server Nothing will be lost
or Make Sure or Delete Corrupt Items, Blocks etc. are In Your World
Did You write in The Minehut lobby "/ join <server>.minehut.gg" if so the correct way is "/join <server>" or You wrote Your server's name incorrectly or You Havent Completed Making the Minehut server
The Only thing You Can do is Now Make a New Server World Because the Command "/give <player> <item> 1000000" is over the limit You Could At least make it 100 or 300 but You Intended to Make it Over the Limit
Me Thinking Here: *why the hell did you do this*
Reason 1 - You Already Have Used You 2 Free Server Slots (Buy 1 Server slot for 400 Credits)
Reason 2 - You Must Have Done Something Wrong with your Minehut Account or Server
Solution - Create a New Minehut Account using a new or secondary email address or Fix The Problem That YOU Created, If You Didn't Do Anything Wrong It Must be a Minehut Technical Error
This is all I Can Get from my mind
I Hope this is Useful