Additional selectable attribute values needed from Yoast SEO for GTIN, MPN, ISBN

I want to add the GTIN to my product feed.
Now I see that CTX has created additional fields for every product to add these.
But also Yoast SEO adds these fields, which I am using already for GTIN and MPN for the product scheme.
Unfortunately these values cannot be selected from the CTX plugin for attributes like GTIN, MPN etc.
The values Yoast adds are the following:
GTIN8
GTIN12/UPC
GTIN13/EAN
GTIN14/ITF-14
ISBN
MPN

Could you please add the correct attributes for these to the plugin and make the Yoast values selectable?

Thanks in advance and kind regards,
Michel