Send Http Fail(2)

I was using my YI IOT desktop app for Win 10 for a few months without any problems. 2 days ago while it was running normally it suddenly stopped working and now when I try to log in I always get the same error message Send Http Fail (2). I tried reinstalling the app, I tried to add an exception to my firewall or turn off the firewall completely but nothing solves the problem.

I can still run the app on my phone over the same router without problems. However I still tried changing DNA address as per another thread here, but it still doesn’t work on my laptop. Anyone has any idea how to solve this issue?

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Thank you.

the same for me when I use my pc, not a new pc, but the same pc I used 2 days ago
KAMI is not useful, he don’t know nothing, he have not a solution