Möhlenhoff Alpha 2 , not starting

Third party integrations
1

The internal website of the alpha base station is reachable and works. But in HA it shows a failure. The only log I find is:

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This integration has been working for many years without problems. But it just stopped. Any idea (HA is on the latest versions of everything)?

I removed the integration and added it again with the ip of the controller:

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This is the result. And here you can see that the controller is reachable:
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2

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I tested it with the Alpha test module, and no problems.
So unclear why the connection fails in HA.

Is this integration no longer maintained? It mentions J-a-n as contributor, could someone ask him to look at my problem? Thanks.