This article, it guides you on how to clear data on the Android Stick.
1. Go to the Setting
2. Click Device Preferences
3. Click Storage
4. Select Internal shared storage
5. Select Apps
6. Click OptiSigns
7. Click Clear data
8. Click OK
Then you can relaunch the OptiSigns app.
If you have any additional questions, concerns or any feedback about OptiSigns, feel free to reach out to our support team at support@optisigns.com