Oops! Something went wrong. Try again later. Oops retry. Cannot reach server. Check network conections.

Oops! Something went wrong. Try again later. Oops retry. Cannot reach server. Check network conections.

Hi, 

I get this when trying to access my different e-mail folder like Inbox and sent. Started a few days ago. 

Oops! Something went wrong. Try again later. Oops retry. Cannot reach server. Check network connections. 

What to do?

Thank you.

/Daniel