Thanks it helped. Thank u very much.
The Home Assistant is blocking requests coming from proxies/reverse proxies by default. You need to allow requests coming from Cloudflare Tunnel to Home Assistant.
Add this to the configuration.yaml
http:
use_x_forwarded_for: true
trusted_proxies:
- 172.30.33.0/24
You can find more details here, from step 9:
https://www.espboards.dev/blog/homeassistant-public-access/#setting-up-cloudflare-tunnel