Question about Xiaomi Robot Vacuum X10+

With a compressed air pump, blow through the water supply at the back of the housing.... we drove to the petrol station with the part, then it worked :)

First, as described by others, I blew in with compressed air spray from above (the water intake). But that didn't help (or just too little pressure). Then I used a straw to suck in the water from the "nozzle" that fills the robot. It took some suction until it came. After that, filling the robot and wiping worked perfectly. Hope this helps.