Optimize "buy credits" area for external payment provider

Customize Text in CTA freely
We will forward to payment forms from our external payment provider where they can choose the different packages (500/1000/etc) and in this case "choose" (in German "auswählen") would be better:

Goes together with 1.:
In this case it would be also nice to have the opportunity to choose in product options via toggle to "not show the amount of credits" (the number/graphic/”Guthaben”) because they will choose on the redirected page then the amount. It makes no sense using external payment provider and set up more than 1 custom product for sms and mail → 1 for each is enough and on the redirected page client will choose the amount then