What if I unistall blockland? When I re-install will my key stilll be there?

[Green Warrior]

Or will I have to put the key in again?

[Ad Bot]

[Chrono]

You will have to put in the key again.
Goto the blockland homepage, support, then key recovery if you lost it.

[TheArchitect]

Just copy the key file. Then paste it back after you reinstall blockland.