Continue development of DNS changer app

General information for the app: DNS changer app to use DNS for filtering domains
Kind of development: Customization of existing app
Description of requirements/features: I’m looking for an Android app developer to pick up a project that was started with another developer. The original developer has managed to get most of the app functionality working apart from the core component.

The Purpose of the app is to make the Android devices use my DNS server which filters traffic (e.g. blocks porn, gambling etc).

My DNS server will not respond to DNS requests unless a client has authenticated using a token.

For some reason,  the previous developer has been unable to get the authentication to work.

The DNS server token authentication works fine with a Chrome extension that was created by the DNS developer, so should work with an app

The app has been built using Android Studio and is a DNS changer that works using OpenVPN
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