Hello, the Android P you are using is a Developer Preview 2 which Google distributed to handful of devices including Nokia 7 Plus so that it would be easy for developers to work on their apps and prepare it for the new Android P. It is not meant for general user and contains a lot of bug if you are going to use it as a daily driver. So, the Nokia Beta Labs and Developer Preview are different things. The final official version of Android P will be released by Google after a couple of months and after that Nokia may start Nokia beta labs for their phones which are meant for normal users. However if you are a developer and using it to test your apps on the new OS platform then Developer Preview 3 is will be available this June. This Developer Preview 3 won't fix all the bugs but will add new features for the developers to play around and integrate with their apps. Thank you.
Hello @user1526756072037, I think you have to flash the updates again. Thank you.