Hi, when installing I had some problems I just want to share the solutions to:
Open Gapps Error - 70
> boot into TWRP
> Goto Wipe
> > Advanced Wipe
> > Select System
> > Repair or Change File System
> > Select Resize File System
> > Swipe
> Factory reset the Device
> Install the ROM again
> Flash GAPPS (if error 70 still persists repair or change file system again)
Setup crashing / freezing / black screening
> use next larger Gapps (micro worked for me)
Play Protect not allowing access to the Playstore
> download
https://androidfilehost.com/?fid=673956719939830832 and copy it to a micro SD / USB stick
> install it on your device (you can just deny the phone permission)
> open the app ("Device ID")
> type the Google Service Framework (GSF) into
https://www.google.com/android/uncertified/
> solve the CAPTIA
> go into settings
> > Apps & notifications
> > See all XX apps
> > Google Play Store
> > Storage & cache
> > Manage space
> > OK
> > go back
> > Google Play Services
> > Storage & cache
> > Manage space
> > OK