Hi,
For most nginx setups, this:
curl -v http://<your_domain>
Should give you a 301
This:
curl -v https://<your_domain>
Should succeed. I assume that this is what’s happening for you from your question, but do make sure.
How about using a different browser, same thing? What do you see in the console of the browser’s dev tool.
(A few have seen good results by referencing this previous quesiton: Installing n8n selfhositing - #24 by KhemOptimal)
Khem