People that have not linked their ORCID to their work mailadres, and receive a mail that a DMP is shared, cannot get access to that plan.
2 suggestions:
invite collaborators should have the option to invite people by ORCID
when invited by with mailadres not linked to ORCID, you should be able to login with that mailadress, and link that dmponline-profile to your ORCID.
People that have not linked their ORCID to their work mailadres, and receive a mail that a DMP is shared, cannot get access to that plan. 2 suggestions: