Can't load Medusa.js site in Visual Editor

I have my site built using Medusa.js and have successfully integrated the Builder SDK with it. I can see all the React components to register, but when I actually try to open my landing page in the Builder visual editor, it never loads and the Chrome dev console just gives me:
{"status":401,"message":"Authorization required","detail":"For help please contact support@builder.io"}

I have verified my preview url is the same as my actual site url, and I have even added it to the storeCors in my backend config.

Thanks,

Hello @Nando_C,

Welcome to the builder.io forum post.

Could you please confirm if you’re encountering error 307 when using the http://localhost:800/dk preview URL in Builder?

Hello @Nando_C,

For help on integration Builder.io + Medusa JS storefront, you can refer to the below forum post.

I hope this helps!

Thanks,