Failed to load resorces 404

What is the name of the domain?

yanyan.pl

What is the error number?

failed to load resorces 404

What is the error message?

failed to load resorces (css,js,images)

What is the issue you’re encountering

after connected website to cloudflare is error " failed to load resorces"

What steps have you taken to resolve the issue?

Purged everything in CF, Deleted cache reserve, used lite speed to remove all cache, edited config, edited .htccess. Chmods is working good.

only 1 thing is resolving the problem “Development Mode”
When the Development Mode is open, webiste is working properly.

I had hosting on OVH but website worked slow, i added to cloudflare. All was working but website because of server OVH was still slow so i deleted website from CF.
I also changed server. I was waiting about 3 days for update DNS, and then (2 days ago) i added website again to CF + updated DNS.

I noticed that the old configurations (which I deleted because I changed the server) loaded automatically. Maybe this is the problem. I don’t know myself anymore

What are the steps to reproduce the issue?

just connect with website

Screenshot of the error

Purge and clear the cache files with autooptimize and at the origin server.
Purge everything (Cache) at Cloudflare dashboard.
Temporary Pause Cloudflare to see if my Website works fine over HTTPS with all the resources as needed without cloudflare proxy.
Double-check plugins for any issues at hosting.
Un-pause Cloudflare and make sure it works as it should.

404 error comes from your web host/origin server.
OVH has had some issues in past 24h with availability https://www.status-ovhcloud.com/.

i did all of that. without cloudflare website is working fine.