I’m Using the latest version.
The folder names all sync up.
My iPhone can sync up ok.
But Outlook won’t. (EAS)
The ost was about 5gb (Local cache) 20k messages split across 10 folders.
It just sits there saying ‘Waiting for server rsponse’
I have tried deleting everything and starting again but no change.
I don’t have this issue with small mailboxes, Or if I remove 99% of the mail and start again, or add it all very slowly.