Emails disappeared

This morning, all of my emails between 11/16/23 and today, 12/14/23, disappeared from my inbox, sent mail, trash, and other folders. This has occurred across all my devices, including in Xfinity's online email client. I am still able to receive new emails, but everything from that period of time is simply gone, not moved to any other folder, through no fault of my own. My email account usage is at 9% as well, so they wouldn't have been cleared due to space constraints. I have changed my account password for security, but would like these emails to be recovered.

This issue appears to be very similar to other posts, for example: https://forums.xfinity.com/conversations/email/emails-disappeared/640f90fe61d17c4791204380

In this previous instance, the issue was resolved, and I'm hoping the same can be done for me as well. Any guidance is appreciated. Thank you.