We've now resolved the incident. Thanks for your patience.
We've fixed the core issue, and are waiting for things to recover.
A network connectivity issue is affecting the Webmail client. As a result, the Webmail client cannot connect to the IMAP server. However, direct access via IMAP/POP3 remains fully operational.
Our team is actively checking the issue. Further updates will be provided as soon as more information is available.
Please feel free to contact our support team if you need assistance.