Hello @SandyHHK,
Thank you for your post. Currently the auto return feature is not available on the Payment links and buttons. However, the PayPal Product Developers do have this on the roadmap, so it will be a feature in the future.
You should be able to see the information from the payment in the transaction details as well as in an email notification.
For your last question, the text box option is currently available in the pricing option, "Customer sets the price". This allows your customers to send you specific details for the order.
For the option "Customer picks from a list" you can add additional details in the drop down list. For instance if you have clothing in multiple sizes and colors, you can include that in the options, and price.
Below is a screenshot:
Additional troubleshooting can be found here: https://www.paypal.com/us/cshelp/article/help1137
Thank you,
Jennifer
MTS
PayPal
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