Sorry I'm more of a mechanical guy ..and this stuff I'm not up to scratch with..also my ownership s 1.8 tddi ..but i can only point you in the hopefully right direction
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There is a crankshaft sensor as well You said you'd tried easy start, so not a fueling issue.
other things
immobiliser fault . I cant give you any help with this, as i don't know
Ignition switch fault - sometimes common on switches that had a bunch of weight hanging from them on the key ring that has worn them out . may turn over, but other circuits in switch fail to activate.
Blown fuse or faulty relayYou can find out where the actual fuses and relays are for the things that effect engine running ..you may find that there are identical relays that you can swap over to confirm if at fault.
This information may be in the BEMM Manual, BODY - EQUIPMENT- MOUNTING- MANUAL--- only available for 2018 vans, I don't know how far it goes back ..this is publication that may cover as far back as 2014 ..you'll have to read through it...
https://www.fordpro-specialvehicles.com ... plate=TCON
multiple bad earths, battery connections, bad battery, etc - worth checking ..a system that has electronics needs a minimum voltage of 11.75v to properly function.
all the best.mark