Help with figuring out AR Flow issue using Vuforia and Unity in a Native iOS App.

We had a developer (no longer working for us) that created a flow that can use either 3D Object, Video or static image that will be triggered on an overlay marker. This is on a nearly completed iOS app that utilizes Vuforia, Unity and our back-end. We have an issue where we have a few older 3D objects that can work in this flow, but when we try and create new 3D objects they will not display in the same way. To be eligible for this task you need the following: *Ability to problem solve *Ability to start working today ASAP! *Must have developed iOS native apps that incorporate the integration of Vuforia Target manager and Unity that will trigger 3d objects to display in our iOS native app. *Must have iOS native development experience. *Knowledge of bitbucket or similar repo *Speak English fluently and have the ability to have a verbal conversation. *You must sign our NDA, prior to working on this project. Not must haves but a plus for the following skills: *Asset Bundle browser Tool experience *MS SQL *AWS experience with difference services including EC2, S3 etc...