Traefik in docker doesn't run on some apps and I can't determine why

I'm new to docker and got Traefik 3 up and running with Pihole. MOST of my apps get certs and I can access them via subdomian, but there are a few that won't load despite being correctly set up in the file provider as an external service. Not sure where to even begin but I've been hitting my head against a wall for a few days. I can post any screenshots needed. Thanks!

You can post your Traefik static and dynamic config, and docker-compose.yml if used.

Use 3 backticks before and after code/config.

No screenshots.

Enable and check Traefik dashboard and Traefik debug log.