I solved this. Hence why I deleted the original message.
Exporting the provider config is impossible via Config-Sync as this config requires env variables.
Instead I configured them at the Strapi Bootstrap.
I used the Strapi core store to set the config via strapi.store({key: ‘grant’, …other stuff}) method. I don’t remember off the top of my head the other properties to be passed to the store but if someone wants it I’ll post it here 