Hello there,
I was about to open this exact subject myself when I see that Paul is having EXACTLY the same issues as me – indeed my site looks identical to Pauls screen-shot. I tried the suggested css (by pasting it into the CUSTOM CSS field in Avada Theme options) with no effect at all.
I am using the Avada theme with woocommerce and event tickets plus, so please keep looking for a solution to the non-responsiveness of the plug-in as I feel it will help me also!
Many thanks
Jon