Be careful who you give your cpanel or admin level application logins to.
You have to have complete trust that they won't install malicious code to back door into your site to trash it, use it to spoof emails, or in the case of eCommerce - steal. I've personally never had a problem, but in over ten years only one programmer, who I knew well and trusted has had my login info.
This is not something you should do with someone you meet on a support forum - offering to help.