Hey. Tried doing this step. When opened again, it did prompt for the option to add the number. But, it was to no avail. Same thing. Maybe waiting is the answer for the time being!
Hey, So, mine is a Pixel 8a and I gave Google tech support a call, and they will look into the issue. The guys took my notes and did a escalation, as they said, many people are having this issue, including Samsung & Google peeps. But, other Androids ...