I downloaded blockland on another computer and I can't get my key

[Jefferson Block]

I'm just trying to play blockland on a new computer, but my key is on another computer that I can't access anymore.
I also had a piece of paper with the key in a folder, but after I moved I can't find it anywhere.

[Ad Bot]

[Zeblote]

https://blockland.us/keyRecovery.php