Every time I try to save a viz to the server, I either have to log in again or the process fails, though many times logging in still doesn't work and I get a server timeout error. This happens even minutes after a successful save. Logging in many times and repeating the process eventually gets the saving to work. This is not limited to one viz but happens to any I've tried. What can I do to have the desktop app remember my login credentials and connect to the server reliably?