ALEXA ECHO - why doesn't the Logitech Harmony HUB skills work?

Has anyone encountered a similar problem? Running Alexa Echo on Raspberry Pi (on a developer account on Amazon) and Logitech's Harmony Hub. When trying to enable skills for Harmony Hub a blank window pops up. A configuration window should pop up with the ability to connect activities from Harmony. What is the issue?
I asked a question on Logitech's help desk. Unfortunately they pounced on me. They sent info on how to configure skills and that was it. After my info that it does nothing, I have not had any feedback from them for two days.
For the time being, I have connected the Alexa Echo to Harmony via the IFTTT app. There I can download my activities from Harmony without any problem. (I had to register a Harmony HUB account in the UK otherwise it was not possible to download activities from Harmony - it displayed - activity lock) I suppose the issue is that Amazon detects that I am trying to set up the Alexa ECHO from my phone in Poland (theoretically a region not supported by AMAZON, no download in the GOOGLE PLAY shop).

The problem is not with the Raspberry Pi ( here everything works fine) but with skills , the software plug-in between the Harmony HUB and the Alexa Echo service.
Logitech is making a mockery of customers who live outside the US and UK. Skills only works properly (can configure itself) in the locations indicated. According to Logitech, only English is spoken in these areas? It is a pity that the company does not write about this in the documentation for the device. I have spent more than 300 zł and the functionality is significantly limited. Now I have to combine (use external programs) to get at least a substitute for the promised functionality.
In addition, the help line of this company is a mockery. They were unable (or unwilling) to inform me why the skills do not work. (I don't suppose they didn't know that). In a word. I do not recommend HARMONY HUB in Poland. Better to buy a Chinese Broadlink for 160 PLN and enjoy unlimited functionality.