I Am having the same problem and I have also tried everything. It is particularly frustrating because I reload the app and it works... For an undetermined amount of time. Then, I'll have my phone in airplane mode (on an airplane) and I will compose many messages and when I land, gmail stops working and all
my drafts are lost.
I am linking the problem to using it in airplane mode. I also used a /mail in the server section and I thought it was a fix, but it wasn't.
The Gmail app is awful, I want to use my mail app.
I will have to create an email account from someone else.
any suggestions? i already broke up with hotmail
because it doesn't keep emails past a week on my phone.