Download
freessm and connect with a
vagcom cable and see if you get any better codes from that
them Clifford's can give issues with not starting also ,maybe that can be ruled out bye contacting
clifford or a call to
MDS who most likely installed it if was done bye the previous owner.
a lad on here his car wouldn't start after been intermittent 3 or 4 times before that
spent 3 months on it trying to get it running
even at one stage thought it was the antenna on the Beacon Hotel interfering with his immobiliser as it happened twice at the same cross roads
mechanic came up with a scanner that scanned for bad cables and it turned out to be corrosion on the wire to fuel pump which had been joined previously along the floor near drivers seat,had it running in 15 minutes
I know you can be unlucky sometimes and it can be something odd but they are fairly basic cars which in general seem to give the same simple faults.
you may have recovery on your insurance to have it dropped to a garage free of charge so id check that also