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.
Some additional context: I was able to add this member just fine before, but I had an unrelated issue that was resolved by resetting my Pack’s charter roster. Now, starting over, I can’t add this member. So probably related? Thank you.