I mostly use prepaid debit cards which isnt supported. Because I can control how much I allow to be used at a time. Paypal is widely used im not really sure what the issue is not adding it to a payment. Credit cards are dumb and there greedy and you have to pay interest on everything you spend. Adding a credit card to pay for storj isnt even worth it for many reasons. Not sure of the reasons behind cloud storage providers only wanting credit cards for payments. There has to be other ways, Im deff not gonna add my credit card number for my 75cents I use per month on storj.