WooCommerce Styles not Sticking

When I go into the customizer and update the layouts for each of my Woocommerce pages they look great. However after saving and publishing my changes and returning to the Woocommerce pages, none of the styles or layout adjustments made in the GeneratePress Woocommerce customizer stick.

They are all being over-written by styles in the WooCommerce stylesheet.

Here's an example video of what it's doing:
https://cl.ly/1u3Q1J0U1T0C

Not sure why this is happening, or how to fix it apart from manually over-riding all of the styles in my stylesheet.

Any suggestions would be great, thank you.