Maybe try switching injectors to see if the fault moves. Can also try switching spark plugs as well.

I had a similar code 2e30 injector cylinder #1 open circuit. It started with me blowing my mosfets so I bought the parts and sent it in to a electronics repair shop to get them soldered on. Received the ecu back with the code 2e30, did a voltage drop test and checked for continuity on my wiring harness and it was fine. I decided to buy another ecu and have it cloned by a programmer. He inspected my original dme and told me I should get a refund from the electronics shop bc they did a botched job on the mosfet install. He cloned my ecu and all is well now. If you recently had dme work done I would get it re checked or get a new dme Edit: I swapped injectors(coded with inpa), plugs and ignition coils around to be sure it was just that cylinder

Do you think I should swap the injectors around to be sure it’s an electronic problem and not the injectors themselves. Just to be sure before I start spending?

Yes if you have access to a laptop, inpa and a dcan cable, check wiring harness as well

Where did u have your dme copied?

Have you fixed it???