inbox messages disappear after a few hours

[fc]

Hello everyone and happy new year!
 
I have been trying to use aquamail for a few days from a Google/Nexus tablet for an "...orange.fr" account but all received messages seem to disappear after a short period of time (a few hours I guess).

I have tried to use the FAQ ( such as the advice about 'How long are old messages stored on the device') and have been reading posts on this forum but I am not getting anywhere despite playing with the settings....

If you have any advice for me, they would be welcomed

Thank you in advance. Best regards. Fc

[Kostya Vasilyev]

When you find this happen next time, please long press the account and choose Diag: message dates (last item). Then select the Inbox and press Start, the app will tell you what do do next.

A common case of this is using another mail app, over POP3, configured to remove mail from the server when it checks mail. Then these removals get synced into AquaMail. Could this be the case here?