Header and font change problem

Hi,

I have a problem with my site – I’m hoping it’s a simple fix but I’d appreciate some advice on why it’s happening and what I can do to fix.

My site header and font changes when I link to different pages within my site. From what I can tell, it’s pages within the catalogue pages. (I’m using a Flatsome theme with woo commerce.). I thought the problem was a simple font change – reverting to standard fonts from google font caused by poor connection and loading times. However, I’ve noticed that the header changed and includes an old social icon logo – (X Twitter) which has been removed some time ago.

Any help with what’s causing this and how to correct would be much appreciated. I can add before and after images so you can see the issue if this helps.

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