I downloaded My Backup Pro to use as a secondary backup on my Google Nexus 7 device which is running Android 4.2. When attempting to configure the the email address and password associated to the My Backup Pro account it continued to reject the information I was providing. Initially I thought the password must be too long, which it was, but even after shortening it to the allowed fifteen characters it continued to reject my settings. It ended up being the email address I used not being accepted because it included a “-“. Below I describe a bit more and provide a screenshot of the screen in question.