Hello. I’ve experience this since last month and everytime I tried to save my backup data (or gift iso to others…) it keeps prompting me ‘Login Fail’ and ask me to try again. Can anyone help me solve this problem? I’m worried that I can’t save it as backup in future.
Install facebook app, start mpq, login, delete facebook app. That’s all. 
Any other things to try if the facebook app install doesn’t help?