Apparently, I cannot donate rice whenever my rice total for the day ends in 90 (ie 190, 890). I find that I have to log off and log in to be able to donate again, but the same error occurs usually at 190 again.
Would it be possible to let us know your username?
Also, we have a very aggressive antibot system, implemented after we found our site inundated with bots that were overloading servers and discouraging sponsors. You may find, simply slowing down a bit will resolve the problem?
Please let us know if the suggestion above works?
Thanks for taking the time to raise rice!