I'm experiencing a problem with my Tapo milling feature. I remember when I first bought the device it didn't mop. I then later had a notification appear on the app that granted me access to mop all areas. 
 

I've moved house and it's no longer mopping again, I've checked the water levels, the general troubleshooting they post online. But from my first experience there is a setting that allows mopping. 
 

how do I get it to mop ??