Sorry you can't get it to work. My only other suggestion is to contact MTH directly. There may be an issue that is specific to your devices.
You can get to the contact form in the app by clicking on the following menus:
2) App settings
3) App support
At this point, a form will appear that will allow you to enter your specific information and send it to MTH. They did respond to my inquiry in 4 or 5 days.