How to use with Cloudflared + Zero Trust?

I'm running gotify on my local network and I want to be able to get notifications when not at home. I've tried setting up a cloudflared tunnel using Cloudflare Zero Trust using a custom hostname: https://gotify.mydomain.com - but it seems gotify can not access the hostname. If I go to a browser to access the same hostname I can authenticate and access gotify. Is it possible to access gotify using Cloudflared and Zero Trust?