Is the deduction by other banks of a 25 dirham fee when withdrawing an amount with a credit card issued by an Islamic bank considered usury (riba) or a suspicion of usury?

The apparent ruling — and Allah knows best — is the permissibility of paying this amount, because it is a fixed fee for the service provided by the bank to the holder of this card, which he obtained from another bank. The answer was given on the basis that the card was obtained through a legitimate and valid means.