Missing Sliders and Drop Down Menus

Alright so I’m reposting this to make sure that all the necessary information is on here for help.

I’m using the Infoway Theme, I believe this is a paid theme, I’m not sure as I’m just an intern for the company I work for and I got kind of thrown into this WordPress stuff.

Last Friday, our company’s website was looking fine and I was working on it like normal. However, I got sick on Monday and Tuesday and haven’t worked on it since. No one touches the website except for me at the office.

So I come into work today, Wednesday the 19th, and see that on our front page, the drop down menus don’t show up and the Slider function is broken. There’s a white blank space where the text should be displaying different products we sell. It’s stuck on just one of the slider images, the LodeArm image.

I have scoured the internet I feel like all day today trying to fix this, and have had no luck. I even posted a thread on here a few hours ago and got no response which is why I’m re-writing it to be as specific as possible what my problem is.

Here is our website that you can see has the problem.

I’m really at a loss as to what happened over the weekend. I finally updated WordPress to 4.3 and updated the Infoway theme to 1.2.1 as I thought that might help fix it. But it didn’t do anything different.

I really hope someone can guide me in the right direction or give an answer as to how I might be able to fix my problem. I’ve certainly looked everywhere it seems on the internet, the wordpress support forums, etc.

Thank you so much in advance, and I apologize this post got very lengthy but I need help!!!!