开云体育

Kent,

Only 2 have been marked as NC even though we used the same Invite
format as we did for the others.

Accepting an invitation confirms one's address. So those two must have skipped your invitation and joined by other means. You can check your group's Activity log to see what happened.

Is there a fix to prevent this from happening to other potential
members?

No.

Apart from educating people on the need to respond to Groups.io's confirmation request. Even with a Basic group you can have another one sent to them.

Shal


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