And it also says that you should replace it every 6 months.

You can now get them cheaply in CH:

https://www.berrybase.ch/ersatzfilt...

After a long search. you can find them here at a favourable price:
https://www.techpunt.nl/en...

But it also says that you have to replace it from time to time - it doesn't last forever, and it also shows how to replace it.

Hello,
it seems acc. their official website. https://eu.smartmiglobal.com/pages...
This filter is washable.

you are not helpful should read what you yourself write for links, first read yourself nevertheless i need such a filter