Padding of box
Alignment of box
Colors of box
Custom CSS class support
5 languages supported
Donation ID supported
Custom user defined amount with validation (jQuery enabled)
Plus as always :
Documentation Explaining Functions & Features
I had some problems to make it work together with BT-login but the suport was great and fixed that right away.
Glad we found the fix to this problem. Strange and bizarre issue but glad I've got it fixed.
Best of luck with donations :)