just got new mate 30 pro. Installed the Chat Partner App, but i couldnt sign in Play Store. The notification not certified keep pop up every sec.

Any workaround?

The workaround are as stated per the above posts.You could try them out to see if works on your phone before you give up on the phone.

You could try disabling it.

https://www.youtube.com/watch?v=QWZNGAdnrWA

If got any new methods I will update.

Did you try to remove your google framework services and install it with an older version? If not then try my method:

1. download the required file - google framework service and google account manager.
2. install google account manager
3. run google account manager>storage>clear cache>clear data
3. go to your phone setting>app>click on the 3 dots on top right side>show system processes
4. at search app type framework, then you will see google services framework. click it then go to storage>clear cache>clear data
5. uninstall google services framework
6. now install the older google services framework
7. restart your phone. after restart, go to setting>users & accounts> add an account>google>click existing and follow the step (verification etc)

you should be able to access all your google apps, for the notification pop up just swipe and disable notification.

you can download the file from my google drive here : https://drive.google.com/file/d/1NumTpV_5At...iew?usp=sharing

enjoy your huawei mate 30 pro 

Haven't u installed GMS?