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Thanks for posting
It may have an aftermarket added on alarm system, you can try this which works on most to disarm it:
Key out of the ignition
disconnect the negative battery cable and leave door open
put the key in and turn to on
reconnect the cable
enter and close the door try to start.
See if there is an on/off switch on the left kick panel or a red LED that can be pushed in on ot just below the dash
Push it in turn the key on and hold the button until the light stops flashing.
Sorry, that's all I got, I'll see if someone else can help