Site looks different after migration

Hi,

I did the migrate but the fonts and text look out of sync. So I rolled back. How can I get the original look with the new genesis blocks.

This is how it looks with the original atomic blocks.
https://musicforlondon.co.uk/
Quiet nice.

Now with the new genesis block after migrate
https://snipboard.io/6nJy4h.jpg
the text is too bold, it’s lost its brown link, and the text is edge to edge on the container.
NOT Nice.

I am also a premium studio press customer, should I open a ticket there instead?

Thanks
Titus

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