Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
I have the same issue - I am a new parent to scouting and have been trying to get my twins set up in Scoutbook for almost a year. Our new cubmaster tells me they are finally both in Scoutbook, but they are associated with two different parent accounts which are both “mine” - one is apparently a very old account from when I was a scout, which I can’t get into, and the other is a new account I set up when trying to get my kids set up. I have tried getting into the old account by email address plus birthdate, but do not get a confirmation email - perhaps because that account is so old (20+ years old, probably).
Do I need to post their IDs and my IDs here in the hopes that we might get help? I would rather not post IDs so publicly.
I recommend contacting your local council and ask them to use their Registrar Tools to look up your children. In the Relationships" section, they should make sure that you are listed as parent only under BSA member number XXXXXX515. They should remove you if you are listed as parent under any other BSA member numbers. Otherwise, your BSA member numbers might get switched at Recharter.