Donation is what it sounds like - "Donation", you did not buy anything. You got it from "bonus points", that were given to you in the equivalent of what you donated. There is no policy involving buyers rights that you can abuse. And even if you could - you will get ignored for years (different governments, no international treaties and etc). And yeah, you can rage or be pissed of all you want about the changes, but:
1.1. User automatically accept project rules during registration. Ignorance or misunderstanding rules doesn't exempt from responsibility
1.2. Administration can make any changes in concept/rules without notifying players
So, everything from this point on is irrelevant.