I had that problem too. I was trying to register for Clickandbuy using the XIV launcher app.

My guess is it doesn't show up in certain browser - if you try a different browser you may have some luck.

Also, when you're at your Square management account page, instead of setting up automatic payments, you MAY be able to use UltimatePay. Click on the "Add Crysta" option on the left and see if you get the UltimatePay option - if you go that route it'll let you directly use your credit/debit card and even use PayPal as a payment. Plus you'll have control over how much crysta gets added. You'll have to spend a little extra time adding crysta to your account monthly (or every few months), but it beats having to use Clickandbuy.