So you have to be holding some Bitcore in order to receive 3% payments. Kind of interesting
3% of 0 is 0.
Illegal division by zero.

I want to remind everyone that is holding BTX and waiting for their airdrop to make sure you don't have any unregistered change addresses!
Please see our coin-control guide for detailed info:

Dear Bitcore-Community,
We have released a new guide showing how to control your change addresses in the Bitcore-QT wallet.
This will enable you to control your funds in a way to ensure you have all your BTX on your registered addresses only.
Download here:
Bitcore Guide: Advanced Coin Control - never miss an airdrop againYour Bitcore Team
Also make sure to check our recent news and link list if you are new to Bitcore: https://bitcointalk.org/index.php?topic=1883902.msg24874139#msg24874139