HI @Jbpl. Here is a screen shot from the Square Loans FAQ. At this time, per the circled section, Square does not accept credit card payments on loans. This is common, as most lenders do not allow it, and I believe the Visa/Mastercard/etc don’t allow it either. Credit cards are supposed to be used exclusively for purchases of goods and services. Follow the FAQ link above as it does offer you other possible alternative payment options, however.
Best,
