Bad request, cf-edge-cache error

I updated wordpress, plugins and changed Fastest Cache for W3 Total Chache. At first it looked ok but after a while I started to see problems.

Bad request in cloudflare plugin v 4.12.4.

Random this kind off numbers were added to my media urls. x28452. I found it in search console as Server (5xx) error. After change back to Fastest Cache I don’t see these numbers.

I use Elementor Random Query on home page. It should dynamically change posts there. But it is changing only when I am logged in in dashboard. I realized it is not changing in incognito mode.

I tried to change many settings in Cloudflare but nothing has worked so far. I tried to set Cache TTL to Respect Existing Headers because I have page rule “cache everything”. I tried add 1 year. Now I paused Fastest cache and use just Cloudflare and Perfmatters plugins.

I use APO for months, never got this error, never had problem with dynamic query on home page… Web is

Any idea what could go wrong please?

CF-Cache-Status MISS
Cache-Control max-age=86400, must-revalidate
Expires Mon, 29 Oct 1923 20:30:00 GMT
Last-Modified Tue, 13 Feb 2024 15:20:59 GMT
Vary Accept-Encoding, User-Agent,Accept-Encoding
cf-apo-via origin,miss
pragma no-cache

This is what I get when run a test.