After 10/19/2020 app update, the whole system stop working. – Airthings Wave Review

I have 1st generation Wave, Wave Mini, Hub, and 2nd generation Wave. After 10/19/2020 app update, unable to sync data. Hub wasn’t recognized. So I tried unregister all devices then add device one by one. It keep showing unrecognized network error. Unable to add the device and even unable to contact customer support. I can’t even change correct measurement unit to US. It’s total mess.
Review by gargamelh on Airthings Wave.