Activation key = revoked?

[DuckHunter]

Decided to play blockland after a few months and i entred my key.
It stopped for a second.. then said ID VALID on the bottom
*Sometimes it works, then it says OFFLINE MODE, then i restart it and it says DEMO.
*I used to cut+paste other version of my blockland and it worked, but this time i didn't. 
Please help me.

[Ad Bot]

[DuckHunter]

Sorry for double post but i can't edit,
my open things are (not sure if it matters)
Photoshop CS5
MSPaint
Mozilla Firefox (obviously.)
Blockland Folder
Canon Solution (mother's)
Digsby (mother's)
Not sure if it matters

[DuckHunter]

I'm sorry for triple post, but i wanna play so badly :(

[DuckHunter]

it works yay!
just messed up letter in 1st part of key