Email stopped syncing across devices
Until a couple of weeks ago, when I deleted an email on my iPad, it would be deleted on my iPhone and iMac. When I moved the email to a folder on any device, it would be moved on all devices. Incoming settings shows: IMAP Path Prefix / with nothing after it. Server Port is identical on the iPad and iPhone.
Both the iPhone SE second generation and iPad are updated to iOS 15.5.
iPhone SE (Gen 3)