Charles-Tim & dkbit98 - I owe you both an apology. The card reader is on my bank account and it is only for higher amounts. Sorry to have wasted your time - I am slowly learning. Brgds
Had things to say on a session time out but, it’s good you get it now that, it’s your bank and not the exchange in particular.
No exchange would require you of your card details or even enable a link to your bank for a direct purchase of cryptocurrency. Don’t forget, banks deal on fiats and haven’t been any friendly with cryptocurrencies just yet. Find an exchange somewhere that requires your card details to buy cryptocurrency, you should be weary and worried.
It’s okay however for banks to seek extra verification when you’re doing large sums, it’s for your own protection.