For me the issue was that I had god mode enabled on my vehicles which was colliding with the mod. I turned off a few settings within the vehicle god mode menu and I was good to go. If you need some help troubleshooting I would be more than willing to walk through it with you and see if we could find the problem!
I'm having issues being able to get out of a spawned car. The mod is great but being able to get in and out of my car would be nice, it could be on my end and I don't doubt that so any kind of help/suggestions would be appreciated.