Link eWeLink Account x eWeLink CUBE Version 1.7.0 -> 1.8.0

I am unable to associate iHost with my eWelink account. The QR Code shows an error and also says that the username and password are invalid, even though they are correct. Another issue is that it is not upgrading from version 1.7 to 1.8.

I have Ihost on version 1.6.3 and have the same problem.