[google-cloud-sql-discuss] Cannot seem to write to Second Generation Cloud SQL?

I have a small test audio site where users can register, upload and play tracks 

1. I have set up a LAMP stack using the Cloud launcher creating VM001
   
2. set up phpMyAdmin locally
3. deployed script which writes input data to local database
4. have now created a 2nd Generation Cloud SQL db_cloud
5. Have allowed the VM001 IP address under Access Control>>Authorisaion
6. have created a user MEMEME with password
7. added IP address to phpMyAdmin which i can log into with the user credentials (not Root)
8. i have imported the database from local >> db_cloud

Ie  - i have a local setup which is tried and tested and works fine

AND 

now i am attempting to use Google Cloud SQL service instead of local database.

everything seems to be in working order

EXCEPT

1. new inputs eg new user / new uploads /  etc do not seem to be written to the external database
   
2. user cannot play existing tracks

Have i missed anything in terms of permissions for connecting between my Google Compute Engine VM instance and Google SQL instance?

THanks

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