I moved Mobilizon to a subdomain, and it broke

Like the title says, I had first successfully set up a Mobilizon instance on <example.tld>. When I changed the :mobilizon:instance.hostname parameter to <subdomain.example.tld>, the instance ceased working properly. For starters, it is still accessible at <example.tld>, and then logging into it displays a weird behaviour: first it cannot fetch anything from the events feed, and then it logs me out. I also altered :mobilizon.Mobilizon.Web.Endpoint.url.host to match the previous hostname, complete with the subdomain, to no avail. I’m using Mobilizon 4.1.0 on NixOS 24.05.

This has been solved somehow by either a daemon process that I am unaware of, or by me logging into the instance from the web interface at the old <example.tld> domain, and then going back to the <subdomain.example.tld> one.

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