There are a few things that can cause you to see a "Transaction Failed" error when purchasing UDisc Pro on an Android device:


First, make sure UDisc has access to use data on your device. If you've done that and still have this issue try the following:


Go to Installed Apps -> Google Play Store -> Permission manager, enable "Start in background" permissions.


Lastly, this issue can occur on specific devices. Huawei phones such as the Honor devices can cause a number of problems due to their atypical handling of background processes. This results in UDisc (and other apps) failing to connect to the Play Store for purchases. We recommend trying the steps outlined in this article if you are running into purchase problems on one of these phones:


https://phandroid.com/2017/02/02/huawei-honor-emui-first-thing/


If you're still unable to purchase and get the error message from the screenshot above, please email team@udisc.com and we'll get you up and running.