Upgrade an android app (solve a Vuforia issue & add valid privacy policy)

I have an app already available in GooglePlay store. I used Unity + Vuforia to build the app, and it is an Augmented Reality app for children books. The app is running perfect up to Android 5. So, my issues are two: 1. Android 6 changed things regarding camera permissions etc. As a result, now the app fails to initialise the camera (more specific, the user get a message of "Failed to initialise Vuforia" and a black screen). It is very (very very) important to have an Android 6 device to do the tests. Please don't make a proposal if you don't have an Android 6 device to test the app (I have already a bad experience with Freelancer.com coder who send me a lot of app to test them myself :/ ). 2. Another issue is about "Warning of Google Play Developer policy violation". This is what Google send me some days ago: [...] Your app requests sensitive permissions (e.g. camera, microphone, accounts, contacts, or phone) or user data, but does not include a valid privacy policy. [...] Action required: Include a link to a valid privacy policy on your app's Store Listing page and within your app. You can find more information in our help center. Alternatively, you may opt-out of this requirement by removing any requests for sensitive permissions or user data. [...] What the app really needs is permission to use the camera, and to write on the internal storage or SD card of the phone. Whoever is awarded with the project, he/she will receive a zip with all the Unity files in folders and subfolders.