Dear customer, I understand. I want to explain you, the first thing I notice is that you present an important symptom of a deconfiguration in the system of recognition of the key and immobilizer, let me explain how your immobilizer system works.
The electronic immobilizer protects your vehicle by means of an electronic code integrated in the key. This is composed of an invariable personal code and a second code that the immobilizer modifies each time the engine is started.
When starting the vehicle, the immobilizer checks the personal code and the variable. If both codes are correct, the immobilizer sends a new coded signal to the engine control to unlock the engine. Without this signal, the engine can not be started, even by a bypass.
If you have a problem in the key or in the immobilizer, your vehicle will not turn on, this happens a lot when we perform works in the vehicle.
In addition if the battery has charging problems can cause this starting problems as well and cause the noise you hear.
Tthere are another factors like a problem with the battery, fuses, cylinder of the key or some sensor like the CKP sensor. Starter relay etc.
Therefore, i recommend you first try with another battery or taking out the battery and charging it to test it.
If the battery is ok, we should check the starter realy, it is located in the engine bay fuse box.
Then, if the realys and fuses are ok, we proceed to perform the diagnostic to deactivate the immobilizer becuase is the one that could caiuse the issue.