Hi @r0r0 , it should be, per https://community.fly.io/t/new-feature-every-public-port-now-allowed-for-tcp-services-this-means-http-too.
Can you check Troubleshooting your Deployment to see if your port-related config in the fly.toml is per this.
You can also look in the logs to see if you find anything that looks like an error, i.e., flyctl logs.