Reusable steel coffee filter

So I bought reusable stainless steel coffee filter, the result is very good 👍

It is laser cutted fine filter, shaped like cone. But after a few months using it, water wont flow through filter completely 😭 I found many solutions to fix this on the web, pour with hot water, cleaning with soap, run with hot vinegar, problem still exists

Then one suggests to run it with bleach (i use bayclin) and finally the filter back to normal again 😍