2005 Porsche Cayenne s

Hello Scotty I hope you reply been watching your videos and enjoy the knowledge you share with the world.I have a 2005 Porsche Cayenne S that I bought my wife years ago long story short I had to install new motor car was turning on perfect one day took it to a shop where it sat about 2 months then ever since it has not want to start I can’t even connect a scanner to it because it doesn’t turn or make any type of noise when you start key ..and I’ve honestly been going crazy trying to figure out what caused the car not to want to start..I will pay you for helping me on this issue cause I’m at the point of just parting it out but there’s sentimental value in this vehicle.again I will pay you not asking for a hand out .hope you get to read  this 🙏