DDNS stopped working

I am using a script from https://github.com/gstuartj/cf-ddns.sh/ to update my IP on a daily basis.
Today I received an error message:
Record update failed. { "code": 1001, "error": "method_not_allowed" }

The script was running fine for the last 1-2 years.

A post was merged into an existing topic: No longer beable to update DNS records via API