2012 Ram 1500 cranking but not starting

What is your question?

Just bought this damn thing less tgan 2 wks ago! FOB style key. Turn key to crank, key stays in crank position by itself, cranks and cranks but wont start, red security system light remains glowing while cranking, most recently didnt start Wed, towed to dlrshp. Said it was oil pressure sensor and replaced. 2 days later on Fri same thing. Tried 3 or 4 times cranking a couple different times and finally started. Dealer kept it over wknd and as of now still has no clue what issue is. Just ready to be done with it and find something else after reading all of the negative reviews. Guess I shoulda done my homework first

What makes this problem better or worse?

Nothing

How long has your 2012 Dodge Durango had this problem?

A week