Sidebar responsive issues with subscribe widget

Hi,

I have a Optinskin sign up widget in my sidebar which looks awful on a tablet when in responsive mode. The site works and looks fine on desktop and iPhone but not on iPad. I looked at the forum threads and tried optimising my responsive settings from 480px to 2048 for ipad, hoping it would push the sidebar to the bottom to then show the signup box in all its proper glory but that didn’t work.

An ideal fix would be to push the sidebar down to the bottom in tablet mode as it does when the site is viewed on an iPhone. I literally have no idea how to do this and I no literally nothing about CSS Sadly.

If you could help me I would be super greatful. My website is www.dannywallispt.com

Many Thanks!