cannot verify your blockland id

[_OXBADCODE#]

I have a big problem here,since 5-6 days i cant join any servers because i get this error text.
Anybody can help me out?
I have a ALT and a steam account and none of them work.

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[Clone2]

The only thing I can possibly think is going on here is you're inputting your key incorrectly.
When you type your key in, make sure EVERY letter/number is correct. Double and triple check.

A very common issue is people mistake Z for 2 and S for 5, as well as others, if the key is written down on paper.
If it is written on paper, you can retrieve your key here to double check what's written down.