My aim is to index my Journal L'Europe unie in WoS and Scopus (which is already indexed in Erih Plus, EBSCO, Hein Olnine, CEEOL etc, etc). Among the WoS and Scopus requirements is to have article-level DOIs. But not DOIs issued by ResearchGate, as they are not recognised by WoS and Scopus. DOIs issued by CrossRef , Zenodo and others are recognised, but not DOIs issued by ResearchGate.
Dear Simion Costea Thank you now I see your point. I guess one of the reasons is that Zenodo is a non-for-profit organisation while ResearchGate is a private company. Apparently Zenodo receives more credibility than RG in this respect.
I guess it is best to focus on the other criteria by Scopus and Clarivate to get your journal (https://leuropeunie.com ) indexed there.