Looking for Google Drive API v3 developer to fix some small issue with files deletion of the service account -- 3

We have an Android application that saves the files to Google Drive. So we created the cron-script that deletes all the files after some time in our GD. But for some files created by Android application it returns the following response: "You don't have sufficient permissions to remove those files." Our GD cron-function of related user doesn't have a permission for the files deletion. SO what we need is to give permission to our-account user to remove the files. We own both accounts of service account and the second one (that removes those files). It is the similar issue to this one: [login to view URL] Our budget for that is 20 $