I also couldn't withdraw money I earned, because I have the same problem others do with "Send to my balance" button not working
if you have been on this signature campaign for a long time, you will definitely know that it happens once a while. And the main reason that was given for this is that the wallet is dry. Once it will be replenished, everybody will be able to withdraw. Instead of complaining about the button working, you should instead continue posting so that by the time the button is working, you will enough bitcoin to withdraw.