Thanks alot of the details - this helps us narrow down the issue. We should have this issue fixed for good in a day or two.
Meanwhile - if you are playing between midnight and 4am EST, it`s recommended to relog every half an hour or so. If you are playing at any other time it should be all good.
This is a really stupid problem on our end - we do back-ups of players progress every night, and something makes the game use your back-up instead of current saved progress.
And check your PM again - I accidentally sent it to another player