Yes if you open the desktop client after 30 days its de-linked and you lose all new messages. And yes its bad design and very annoying, but understandable given

Yes if you open the desktop client after 30 days its de-linked and you lose all new messages. And yes its bad design and very annoying, but understandable given their storage limitations. Have a look at the links I posted. Retrieving from the phone would be a better idea I agree.