How can I make one of my forms mobile compatible?

The forms you created in your account are mobile responsive already.

However, if that is not what you are seeing on your end, then you can try to follow the instructions given in these guides.

How-to-Make-the-Form-Responsive-Using-the-Form-Designer-Tool

How-to-make-mobile-friendly-forms-on-JotForm

But if, in any case, you are still having issues making your form(s) mobile responsive after following the instructions in the guides above, please let us know. Kindly provide us the form you are working on and explain to us what you're trying to achieve in your form that is not happening.

Thank you.