Thanks for taking the time to reply.
I'm not clear what you mean "mastered" it and "followed the instructions to the letter"?
Regards.

I hope someone here can help. I've started to travel frequently with work on a British passport, and the epassport gates never let me back in to the UK. So, I queue up to go through the gates, put my passport in, it thinks about it for ages, and then tells me to "seek assistance". At which stage I ...