TenX needs visa or mastercard to accept them, if they don't accept them tenx can't operate.
Mate, wavecrest canceled/blocked all cards which are involved with crypto world for example payeer and advcash are blocked as well because you could fill up your account with BTC ( fiat) load your mastercard and spend it anywhere or withdraw cash on ATMs.
So they have to find an alternative to wavecrest - VIsa, Mastercard.
Or wait until regulations kick in and wavecrest continue providing service as they did before.
maybe to found a own bank ( it will not be easy but it is an aletnative)