Demographics age group is not optional
The member profile section "Demographics" is marked as "optional'. But it contains an age group. If this is not modified, it seems to default to youth, which prevents the member from signing up for anything until their parent fills out some forms. One adult friend skipped this optional section and was confused by his inability to register for anything. So, demographics is not entirely optional. It has effects....
Therefor, maybe change the wording or something?

Hello Tom -
I can help shed some light on what may be happening to your friend. While we ask for age range as part of demographics, we do not use that age range for any website permissions/functionality - they are purely optional! When you sign up as a member or guest member, you must sign our waiver and provide your birthdate. This is how we calculate someone's age and understand if they fall under "Adult" or "Youth" programming and form requirements. There have been some cases where someone does not enter in their correct birthdate or some loop holes that sometimes occur if someone's first interaction with us was a purchasing an online book. I am happy to look into the specific use case you mentioned of your friend if you/they would be willing to share their email/name. That can be sent to me directly at devinl@mountaineers.org!
That said, I am going to close this idea as-is now that I have explained that demographics are optional and that this experience was tied to the waiver.
Best,
Devin Lampe