I have two magento 1 sites on separate servers - this is doubltless the wrong way to have gone about doing this and i'm still on a (steep) learning curve with changin themes in M1
https://www.petrolthreads.co.uk (old site) (M1 188.8.131.52 php5.6)
https://www.petrolmugs.com (development/new site M1 192.4.2 php7.2)
they both work just fine - old site is slow and, well, old and the new site is ready to replace the old site so this is what I've done:-
changed the domain for the whm/cpanel account for petrolmugs to petrolthreads.co.uk
pointed the petrolthreads.co.uk dns to the new server.
i can browse to the new site via petrolthreads.co.uk but the site doesn't work - it has lots of CORS errors (for fonts) and 404 not found (for the slider) and the currency switch stops working.
I have no idea where to look and any suggestions/help would be appreciated. images show the problems - i've undone my doings and sites are back to working now.