To everyone who had problems not being able to use waypoints on DJI GO 4 app on Android devices, new update has been released and issue is now fixed, at least in my phone.
Update at https://play.google.com/store/apps/details?id=dji.go.v4

Thanks to everyone who contributed with their toughts and had been in contact with DJI to solve the problem.

Enjoy.

good to hear that  

Appreciate your update and positive feedback, we are pleased to hear that your issue has been figured out, enjoy it and hope you have a good time on flying.

My app still hasnt updated. I have been checking on the Play Store but it still hasnt changed from 4.1.3

Asainz320 Posted at 2017-7-24 21:47
My app still hasnt updated. I have been checking on the Play Store but it still hasnt changed from 4.1.3

I flew today and noticed it's updated to v4.1.5 dated 4th Aug 2015. Not sure though what's the changes are as the "What's new" seems similar to the previous.

So I'm wondering where the waypoints are located in the file section of the dji app?  Could I rename them that way?