Is it possible to connect a Cavius smoke detector (868mhz)?

Thanks for this ‘manual’. But unfortunately it will not work. When I put the http link in a browser I get the message: {“code”:401,“error”:“not_logged_in”,“error_description”:“You need to log in to access this resource”}
On this community site I found the error message in this post: HTTP GET commandos naar Homey versturen
There they say you have to use https protocol, but HomeWizard does not accept that.
What do I wrong?


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