Get Paid Features for Free Returns 403

Hello,
I am using self-hosted on my server. I’m also very new to this. When I click on Settings/Usage and Plan and click Unlock and then Send Me a Free License Key I get the following error:

License request failed

Failed to register community edition: Request failed with status code 403

I have tried opening in Tunnel Mode with the same result. Any help would be appreciated.

Information on my n8n setup

      • Database: PostgreSQL
      • n8n version: 2.13.3
      • n8n EXECUTIONS_PROCESS setting: default (own, main)
      • Running n8n via: Docker
      • Operating system: macOS (Tahoe 26.3.1)