Hello, X10 this is my second one. I add vinegar (a little). In the water in the container. I did the same with the first one - so far it has been working without problems for more than 5 years.
Also a little vinegar in the container for dirty water. Then it does not stink.
No problem, you can select the areas you want to scrub or just vacuum. You have the choice for each room or area to do dry, with little water / or with a lot of water in the application...
They wash themselves every time.
I changed the one at work, which does 200m² a week, after 6 months!
At home I still haven't changed it after 8 months.
They cost about 10 euros to change, so that's fine!
The robot returns to the charging station each time to clean the pads. This keeps the pads moist. At the same time, the internal water tank is filled to moisten the pads during cleaning. It looks as if the internal water tank in the robot is no longer being filled and therefore the moistening of the pads during cleaning is no longer guaranteed. I would use compressed air to blow through the water channels in the robot. There is probably something clogged.
The Dreame DreameBot L10s Ultra is better in many respects (brush, suction power, cleaning agent, app etc.). In Germany you can get it for 899, while Galaxus charges 1349...