Let me address the points that the Rollbit team raise in their email.
They double down on the fact that there is no way to prove that I currently DONT live in the UK, as they are refusing to accept any proof to this effect. However, the point is proving that throughout my use of the account, I was living in LUX (I still do) - all of the proof discussed previously (i.e. employment contract, utility bills, residence permit, Spanish ID) should suffice to prove that throughout my time at Rollbit, I was living in Luxembourg. So I understand if they don’t want to open my account back up (as they have doubts about my CURRENT living situation), but they should release my winnings as I can prove beyond any doubt that I was living in Luxembourg when using the account.
Moreover, to @Pmalek´s point, I understand that the burden of the proof lies with Rollbit, they are the ones that should be able to prove beyond any doubt that I breached their TOS. If not, what is stopping them from keeping the funds of all winning players, when they won’t accept the most fundamental proof otherwise?
Regarding @holydarkness´ proposal, I will raise it with them and see if they accept.
I will be sending here draft email of my response to their compliance team in a second.