I added a page to my site and since certain features have stopped working and I cannot repair?

These issues arise when viewing the site on mobile. I have disabled mobile site as think desktop looks ok and was working fine but after my latest changes were published I have had issues come up as follows:

1. Slideshow on home page doesn't load on mobile (worked before no trouble?)

2. Drop down menus no longer load on mobile (using iphone and chrome, previously a single press brought up the drop down, then a second engaged the link, now drop downs don't appear at all since latest page addition?)

I want the desktop site to work on mobile as previous but cannot see what I have done to cause these new errors? All I did was add a page that was blank and uploaded one image, then placed this in a sub-menu then these bugs have appeared (right after I launched site publicly, typical!).

Can anyone help with this? I don't want to use the mobile version as too many formatting issues and I don't really have time to manage both versions, just want to get slideshow and menus back working on mobile.

Website in question www.lichfieldwalkaboutfc.co.uk

Thanks,

Phil