Ecovacs Deebot T8 Robot Vacuum

I have had 3 robot vacuums and out of all of them, this is by far, the worst. I wish I could say something good. I only got a new one this one because of the we changed internet and the speed is to fast to use the app and control the other vacuum. I got this one because it was capable of using high-speed Internet, the mop as well as the vacuum. The mop does not get the whole floor. It does not overlap the prior run and the floor is still dirty after the mop. There is a little bar that is supposed to keep the brush from having pet hair build up but I have the clean the brush every time. I have the suction.on the highest level but the vacuum still leaves dirt on the floor, dog hair, and grass The battery does not last last. We have a 2500 sq foot home and it is set to vacuum only about half the house. It has to go back and charge several times to complete the jobs. It takes several hours to complete about 1200 sq feet. It says it has a sensor to keep it from going over an edge. The back two rooms have a step down to enter them and the vacuum goes over the edge and gets stuck. When the job is completed the vacuum goes back to self clean, empty itself (it does this several times during the job) however it seems to not do that well either. I have had to manually vacuum out the holding tank several times and the bag feels like there is nothing in it. I have had this vacuum for months and only had to change the bag once. There is a lot of debris underneath at the dock as well as still on the floor. Today I finally had it and got the prior vacuum that we had in the back of the house and clean after today's run. I can still manually push the button to turn it on and have it run. I just can't control the suction or the schedule. If this was an employee, it would've been fired a long time ago! Paying $800 for this vacuum was a big waste of money and I feel like I flushed my money down the toilet!