Whats going on? I have a donation of 8 and i cant change the mac on any of them nothing works. Cant change mac and getting failed to connect to server errors. When can i expect to get this fixed?

I have gone into the search page and tried to change my mac address like 10times it says successful but when i log back in its still the same old mac. how can i change my MAC

I'm trying to link my MAC address on the donations page but i get this php error A PHP Error was encountered Severity: Warning Message: mysql_real_escape_string(): Access denied for user 'papiao'@'localhost' (using password: NO) Filename: models/donation_model.php Line Number: 2835