UI of Terms not working

[T3chTobi]

I'm using the terms feature of ma1sd: https://github.com/ma1uta/ma1sd/blob/master/docs/MSC2140_MSC2134.md#terms But it is not working with this code:

policy:
    policies:
      terms_of_service:
        version: 1.0
        terms:
          de:
            name: AGB
            url: https://www.domain.de/agb
          en:
            name: terms of service
            url: https://www.domain.de/agb
        #regexp:
        #  - '/_matrix/identity/v2/account.*'
        #  - '/_matrix/identity/v2/hash_details'
        #  - '/_matrix/identity/v2/lookup'

I'm not using a .html file for the url, but a .php script without the extension.

element-web is calling the /terms endpoint and the correct JSON is in the response, but the UI of element-web does not pop up to ask if the user accepts the terms.

These are the called endpoints and here is an article from matrix-org describing the process: https://github.com/matrix-org/matrix-doc/blob/master/proposals/2140-terms-of-service-2.md