Brand Registration

In the past I have tried numerous times to register my brand on Amazon, the application fails but does give specific reason as to why.

My products and brand are trade marked within the UK and here on Amazon I sell only to the UK, other EU markets have always been deactivated and I know longer sell to the EU on any platforms due to the new GPSR regulations.

My question is - Have I possibly been failing the brand registration as it required an EU trade mark as by standard we were placed into these markets? Will i not be able to register my brand without an EU license even though I do not sell to the EU here or anywhere else?

If this is not the case it would be great if I could get some further help with my Brand application, I have been on here a few years without being registered and I feel it's holding me back, I have a few products that are beginning to sell well and I think completing the brand registration would really help.

Thanks

Dave