I had a similar message - kept asking if I was filing for a child but when I selected, "No" had me call the number/mention "info sharing".
Turned out I'd accidentally entered my birthdate as 2018 (any birthdate between 2003 & now would put you under 18 yrs old, so makes sense). I was able to go to "My Info" and "Edit" my personal details, in this case my birthdate - worked like a charm.
Hope this helps.
