Fixed Charge Notice for Speeding - on holiday from UK and need advice please

So, I was in Ireland on holiday for Christmas 2019/New Years 2020 and in January 2020, I was stopped for speeding and informed I would get something at my home (UK) address to make a payment of €80. I asked if I could just pay there and then to ensure payment was made and was told no. But that I could expect to receive a demand for payment within 28 days.

28 days later and no sign of anything at my home address. I called the FCN helpline and gave all of my details to which I was told there was nothing on the system as yet but to call back in two weeks - the officer probably hadn’t had time to load it up yet. I called again in two weeks and again, nothing on the system, please call back in two weeks. I asked if they could take my details and contact me once the FCN was live but they said they couldn’t do this as there was no record or reference to attach my details to.

This happened on two more occasions and I was getting pretty fed up at this point. I just wanted to get the fine paid up asap! The last call I made, I was told not to worry about it - it was unlikely to be taken further now or enforced due to my being resident in the UK, something about jurisdiction. It was also when the courts had closed due to the pandemic. I took the representatives advice and just moved on having made a concerted effort to pay it asap.

Fast forward 16 months - I have today received a court summons and a new doubled fine of €160. Like, wtf?

I would like some advice please. Has anyone found themselves in a similar situation and what happened?

Clearly I won’t be travelling over to attend court, nor will I be presenting myself in person at AnPost to make the payment (I rang the FCN line again who said there is no other way to make payment).

Any help or suggestions would be greatly appreciated. Particularly from any solicitors who could advise where I stand legally and what happens next if I don’t pay (because they are making it physically impossible for me to do so!).

I mean will there be a warrant out for my arrest next/will I be extradited for a speeding fine?! Please help me someone.