A few issues possibly from what I can see.
You have multiple sliders trying to work on the My Account page. You have W3 Total Cache also active which can cause delay in anything new added, or the attempt to show anything new.
I believe though that the main issue is you have some jQuery conflicts with the multple sliders and the drag n drop as well as the select images.
Yes, I also noticed that no buttons work on the forms. And your image slider isn’t working on the My Profile Page.
You will need to sort out what you want to work on those pages, because all of it isn’t going to work together at the same time the way you have it.
WordPress does not allow me to go any further than offering my advice. I cannot ask for any more information where I could be of more help. So, what I would suggest is that you take a look around the forums here, or do some searching on the internet looking for how to resolve jQuery, Ajax, JavaScript conflicts.
I do not know if the other plugins use WordPress libraries or if they follow WordPress best practices. But that could be a problem.
Nice looking website though.