Hello ! The cleaning pads compatible with this model are the official Ecovacs cleaning wipes for WINBOT W2 PRO/W2 OMNI/W2, size 50x50x270 mm (ref. wipe for W2 PRO/W2 OMNI, 2 pcs). They are also compatible with the W1 Pro and W1 models, according to manufacturer and retailer sources. You can find them on the Ecovacs website or at partners such as Leroy Merlin and ManoMano. Have a great day!
I am experiencing exactly the same problem. But only once and shortly after starting. Unfortunately I have no explanation or solution for this, but at least you are not alone :-)
You can also use windscreen cleaners other than the original product. The WINBOT W2 PRO OMNI accepts any glass cleaner, which offers flexibility in the choice of cleaning agent.