Run through that first if you haven't already. They also have a contact form you can use, if their basic troubleshooting methods don't work for you. Without added details from you, i.e. actually describing the app's behavior when you try running it, this is the best that can be done for you. But, there is one caveat: this could be a Google issue. Since Amazon Fire tablets do not have Google services of any kind on them the app could be failing due to Google services not being on the tablet.