I updated WiFi-Link right at the beginning. I have 3.5 versions both in WiFi-Link and in Spirit.
And I can connect to the WiFi-Link - this works with no problem. And I can go to
http://192.168.1.4 and see WiFi pages and proper version number (3.5.0).
But it does not connect to Spirit Unit. This is what the guy in video is doing at 4:42. If I click "Enter the Spirit Settings", it says "connection problem" and that's it.
And Android app also connects to WiFi (I am connected to Spirit network) and it does connect, then it tries to read settings from Spirit unit, and tells "Spirit Unit not found".
So the WiFi part works, but somehow WiFi-Link can't talk to Spirit.
I will try to update Wifi-Link one more time, maybe something went wrong. But I start to fear that maybe my WiFi-Link is too old and maybe something was changed in between. I have it for ~6 years now.