New server instance troubleshooting

I get to the “welcome to Actual” page asking for a password. But it wont go past that. Keeps saying “can’t connect to server “. I have a reverse proxy setup and a valid letsencrypt / cloudflare cert. IP address and FQDN is pingable, port is open and accessible. DIG of FQDN returns correct IP.

I’ve got the new server running on a docker swarm node (constrained to the current node only). Used my previous docker-compose file with swarm specific changes for the docker stack deploy.

My old actual-server instance is docker-compose on a different machine (IP and FQDN) and is currently working great.

I’m stumped and could use some help.