Hi there!
I was called over to awsome148's house to fix a large amount of grief, and you were the sole griefer. It doesn't matter if you were going to donate to the server or not, if you break the rules, you will be punished. You've broken the rules on multiple occasions, and this was the last straw.
Here's the evidence in case you don't remember:
It says you griefed 400+ blocks in that, but I found more grief having to do with water farther in that I forgot to screenshot.