At Android 14 google more frequently fix CTS profiles, that used for pass certification, so, at one unhappy time, you can receive error "Google services on this device not certified" or something same and can't login to google account and use play store. And you have 2 variants, wait for next release with fixed certification or register device yourself one time and have no problem in future, it's not hard, do it step-by-step.
1.Open app DeviceID on phone, you need code at Google Service Framework (GSF), it not so long, remember it for train memory ;)
2.Open site https://www.google.com/android/uncertified/ (on phone or pc) and insert code from first step
3.After get message, that device succesfully certified, go to Settings-Apps on phone, search Google services app, open properties and clean data and then do same thing with Play store app, then reboot phone and you get certified device!