Wero is basically a rename (and territorial expansion) of the Dutch iDeal system, which processed €141 billion Euros in 2024.
Wero acquired iDeal and integrated it (as well as Payconiq)
Just my pet peeve, but say Central Europe here, not East. Unless of course you mean Ukraine or Kazachstan.
Referring to old Iron Curtain is refueling the animosity of the ancient past.