Hi @geleosan,
Thank you for your good question!
Our free and business plugins use only official and allowed by Google APIs. Unfortunately, as far as I know Google does not provide such accessible and permitted methods in case the place has no physical address and you are not its owner (do not have access to GBP).
We guess that other plugins bypass this by web crawling. But we have never used this and cannot, since it is prohibited by Google. We do not want users to be able to take any risks because of our plugins.
Thank you for your attention.