[Bug]: Wrong region for service provider ZKRI

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I Have A Problem With:

A specific source

What's Your Problem

I had successfully set up the ‘Goldau’ region via the service provider ZKRI / Source sammelkalender.ch. The data was correct until a few weeks ago. However, a few weeks ago I suddenly started receiving data for the second region available for this service provider, ‘Arth (incl. Oberarth)’. I have not changed anything in the configuration. The configuration shown in the ‘Relevant Configuration’ section worked and still works in principle, but with the dates from the wrong region. I have already spent some time trying to find the problem, but with no success. What do I have to enter to get the dates from the ‘Goldau’ region again?
Thank you very much in advance for any support.

Source (if relevant)

sammelkalender.ch / ZKRI

Logs

no relevant logs

Relevant Configuration

# Konfiguration Abfallkalender
waste_collection_schedule:
  sources:
  - name: sammelkalender_ch
    args:
      service_provider: zkri
      municipality: Arth
      street: Goldau

Checklist Source Error

• Use the example parameters for your source (often available in the documentation) (don't forget to restart Home Assistant after changing the configuration)
• Checked that the website of your service provider is still working
• Tested my attributes on the service provider website (if possible)
• I have tested with the latest version of the integration (master) (for HACS in the 3 dot menu of the integration click on "Redownload" and choose master as version)

Checklist Sensor Error

• Checked in the Home Assistant Calendar tab if the event names match the types names (if types argument is used)

Required

• I have searched past (closed AND opened) issues to see if this bug has already been reported, and it hasn't been.
• I understand that people give their precious time for free, and thus I've done my very best to make this problem as easy as possible to investigate.