Credit card question


Hi guys. I’m a newbie here in fiverr and I would like to ask a question regarding credit card issues/payments.

I already had my Paypal account but I haven’t yet added a card because I haven’t got one yet. lol

Now it seems this is going to be my problem because I have a client and he says he can’t buy my gig and I think it’s because I haven’t added a card in my paypal yet.

So I wanna know how could they buy my gig if that’s the case?

Can I use someone’s credit card (a relative’s card) and add it in paypal account without getting banned?

Thanks! Hope someone could answer this.