I just installed the rsform plugin and it overwrote the rsjoomla stripe plugin. It would be great if you renamed your directory so they can co-exist. Anyway I digress. I've just restored the basic sample form onto my test site, and it won't work. Looking in the console its because js is not defined. I added the following code to my template
jQuery.noConflict();
if(typeof(js)=='undefined') var js = jQuery;

and now it works fine. but I'm still a bit concerned as to why this occurs.