Website Format is completely messed up

Hi Catch Themes, Currently my website (www.adventuresaroundasia.com) looks like this: http://prntscr.com/6eytew This is not at all what my site is supposed to look like. My content is unreadable and I have not downloaded any new widgets. My host says this is a theme issue and not an issue with them. This theme is supposed to be mobile responsive, but for the last few months on and off it has looked like this on my phone. Now it is completely messed up on all devices. Please help me to correct this ASAP or I will have to switch themes. I would also like a long-term strategy to fix this problem on mobile devices. Thanks, Richelle Gamlam