Hi! I'm experiencing the same problem. I did the update to 1.2.8. Pathfinder adventure loads, but when it reaches the title screen (after the loading screen) it just crashes without any interaction. Some more details:
What platform are you on? - Android
What version of the OS are you running? Android 5.0 (Lollipop)
What model is the device? ASUS Zenfone 2
What is your PFID#? - I can't get this, I think since I can't get into anything.
On my first try, I did get the Google Play prompt to link, but now, i don't get it. I believe I have latest version of Google Play and Google Play Games.