Hi I have just pulled the speed results with GTmetrix and I had 3 lines of not found Fontawesome, one line of not found generatepress.ttf and one line of notfound generatepress.woff.
So i ran the GT Metrix against the London server today and got this:
The issue i saw in the Browser Inspector Console the other day was a 504 error – the server timed out before those files could be loaded. Which GT Metrix was reporting as 404/410’s. Basically the server took longer than 5s to respond.
The Site loads really fast and none of those files are missing so maybe just a problem between your host and the GTMetrix servers (?)