Hi, I have experience solving similar problems, deleting the files doesn't solve the problem, I'm sure I can fix the problem once for all
Relevant Skills and Experience
php, wordpress, mysql, html, jquery
Proposed Milestones
$677 USD - fix problem
I have a few questions, are you using any nulled plugin or template on any of the sites? have you ever installed a nulled plugin or theme on any of the sites? where your sites are hosted?