I just bought their 365 version a few days ago. I love how intuitive it is to use this plug in. I had some difficulty in creating my second form. I was inserting it into an already existing "form" tag and it was not working. But after I sent in a support request they figured out the problem and fixed it for me.
Thank you PROFORMS support team, I would definitely recommend them if you want easy to use forms in Joomla.