Crank No Start

[Deadly]

Good afternoon,

I own a 2000 Porsche Boxster 2.7L that will crank but will not start.
I have verified that junctions 85 and 86 on the fuel pump relay are not getting the signal to turn on; but I don't know why.
So far I have done the following:
- Replaced the fuel pump
- Replaced the Crankshaft Position Sensor
- Replaced the coils and spark plugs
- Purchased a fuel pump relay bypass relay
- Verified the immobilizer isn't corroded
- Verified the fuel pump fuse isn't blown
- Changed the battery in the key fob
- Did a bunch of various different reset procedures:
- Hold the button on the key
- Manually lock and unlock the car while holding the button
- Put the key in the ignition, turn to on position and hold button on key
- Put the key in the ignition, turn to on position, turn to off position, remove key then press button
- Put key in door, hold button then lock and unlock the car various amount of times while holding button
- Etc. Etc. Etc.

The fob buttons do not function for my car; the buttons do not lock nor unlock any part of my car.

Is there any way to actually know that my immobilizer is the issue without having to take it to a mechanic and spend tons of $?