Documentation link is not working

Hey
Just a heads up, the documentation link in the description is not working anymore.
https://simpledigital.dk/wolt-drive

I had a question – if we have multiple stocks in multiple locations, is there a way to limit this delivery method for certain products only and if yes, how is the plugin doing it? Eg. is it meta-data attached to product, whitelisted products etc.