Read the website. It specifically says you don't get any special favors for donations.
10 EU is nice of you and all, but it's really not that much money...
"Please take the following into consideration:
cRPG is not pay2play, and never will be. It's a mod and free.
The money you donate will without exception only be used for keeping the server up.
You do not gain any ingame-advantage when donating (like money or XP), nor any rights - it's only a donation
Have fun with the game.
If you want your name to show up on the list of donators, you can enter it yourself in your char sheet
Please only donate if you can accept this"