Resetting pop password

I recently had to reset my pop password at server level. So I need to change it on Zoho Mail in order to download mails again into Zoho Mail.

When I try to reset it, following this procedure:
- Go to settings
- click on mail accounts
- click on edit for the appropriate email box to administrate
- fill in the new password
- doesn't want to update
The return message I get: "Zoho Account already exists for User"

Thus I am unable to reset it, unable to download my mail.

I've send 5 enquiries using different support platforms, no tickets received, no response.

Please respond.

Regards
Johan

Zoho user ID: 6016435
The applicable email address is: info@artribe.co.za

Currently I have to access my mails directly on the server of my hosting company to get any work done. Please can you help me to sort this out quickly.