Site speed affecting bounce rate (90% +)

Hi all, I’d appreciate some help with this one. My site coffeecode.co.uk is extremely slow and affecting bounce rate, and is currently in excess of 90%. The theme is use is Colormag Pro, and I don’t think this is the issue as other sites using this theme seem fairly quick. The domain is with names.co.uk (in the UK) and the account (??) that I used to set up WordPress is Bluehost in the USA. Could this be the problem?
Gregg R

The page I need help with: [log in to see the link]