Disable the challenge page for your entire site
You can change the Cloudflare challenge page settings by adjusting the Security Level to Essentially Off in your Cloudflare dashboard. This setting will only challenge the most threatening visitors to your site based on their threat score. You can find the Security Level for your site by going to the Settings tab of the Firewall app within your Cloudflare dashboard.
Selectively disable the challenge page
If you would like to selectively disable the Cloudflare challenge page for a specific path, you can create a page rule and add a setting to turn Security Level for the matching URL to Essentially Off: