For me it worked very well with Malta company. PayPal told me that GB IBAN (Revolut) and DE IBAN (TW) is no problem for Malta company. Before this I used LeoPay Visa card this worked well but high converting fees because the LeoPay Visa was issued in BGN and there was no possibility in PayPal to bypass converting fees. But as already said maybe they allowed it with Malta PayPal because they︀ know about the bad banking situation there. I know from business partners that GB IBAN︁ in DACH is working too.