D10s Pro dust box filter

I have a D10s Pro for several years. Happy with it.
Need a new dust box filter but having trouble finding one (for a decent price).
Have ordered three times from Ali Express - all said they would fit the D10s Pro. None did.

D10s Pro is no longer even listed on the Dreametech website. Not even on the "accessories" page.
Not even a listing for it on this form to post a message to the forum. I chose the closest.
Seems like bad business practice to discontinue support for a product after just a few years for something that will likely last at least 10 years.

A separate google search does link to a Dreametech page for the needed filter but the price - to put it politely -
seems like price gouging.

Does anyone have a source for parts for this model - D10s Pro?
If not - and the suggestion is too upgrade to a newer model - - - I will forego Dreametech because of their crappy product support and look elsewhere.

Hi,
We recommend purchasing official Dreame accessories. If needed, please contact support.na@dreame.tech.

Can I put anything else other than water in the mop tank??

It looks like there is a lot of issue with this unit- I agree that for the price there should not be that many issue- should I keep this unit - I have it for less than a week ? And what is an alternative?