Fix Roundcube IMAP Login Issue

I have a Cpanel hosting account where I installed Roundcube on the "webmail" folder. However, I cannot log in due to an IMAP problem. I would like to resolve this issue and am looking for a professional with experience in this area.

- Experience with Cpanel and Roundcube is essential.
- Understanding of IMAP and email server configurations is required.
- Ability to troubleshoot webmail client issues.