Some keyboards apps on Android might cause problems with the cash register and it could be possible that the on-screen keyboard no longer appears.
In that case, we recommend to use Google default keyboard. In order to do so, install the app “GBoard – Google keypad app” free of charge from Google Play Store. Afterwards, go directly to the settings of your tablet and click on "General management" - "Keyboard list and default" and choose Gboard as default keyboard.
Another problem can arise in combination with the barcode scanner. Android recognizes the scanner as external keyboard and will no longer show the on-screen keyboard. This can also be resolved in the settings. To do so, go to "General Management" - "Physical keyboard" and activate the option "Show-on screen keyboard".