Update Unity AR App -- 2

I am looking for help updating an existing Unity AR app for my business. I do have access to the source code, and I'm comfortable with that aspect - I just need a straightforward update to the existing features. If you are familiar with Unity AR and can help with this straightforward update, please let me know. Thanks!

App: Augment El Paso
Software: Unity 2019.3.0f6
OS: iOS & Android
Plugins: Vuforia & AVPro Video