You can schedule the OptiSigns app to Auto Restart daily to clear our memory and have a fresh start.
Note, this only restart the app, if you want to restart, have timer to turn on/off the whole device, please use a Smart Plug. More detail here.
To do so, open the side menu on the app, select "Re-start Time"
Pick a suitable time of day when you want the restart to happen.
For the app to restart, it only take less than a minute.
Then Select OK.
That's all! The app will automatically restart daily at this time.