paypal and other payment icons is not showing up on form preview how can i fix it to show up on live form?

I deleted the payment block and started over I have followed the steps provided. I have a Paypal Business account but it is not a paid subscription. When i use Paypal Pro I CAN actually see payment icons, but i get a black white screen after hitting submit. Also i have no clue what the API information is its requiring me to enter. Where do i find that??? I also tried it with Paypal Standard, But then i do NOT see payment icons and its says error occured when i try to integrate. It appears i need to use Paypal Pro, but i am still not clear on how to complete the process. Thanks so much for your help!

1. To use PayPal Pro, you need to have a paid PayPal Business account subscription. If you don't have it, there's no point using PayPal Pro as it will always give out an error. If you want your users to be able to enter credit card details, then please upgrade to a paid PayPal Business account.

How-to-Integrate-Form-with-Paypal-Pro

2. On the other hand, if you don't want to have paid subscription in PayPal, I would suggest instead that you use PayPal Standard. However, please note that it can only accept PayPal payments and not credit card payments.

How-to-Integrate-Form-with-Paypal-Standard-