Click to Update Profile!
Thanks to Psych for the suggestion on adding an Instagram profile field!
I've went ahead and added that + Bandcamp field as well (please use Bandcamp!!)
I also went ahead and made a change I've meant to but kept forgetting - I've now made it so there's only one Soundcloud profile field, which might impact some of the OGs here. Basically it used to just take your username, but some people don't have a username or some just pasted their whole URL in the field which breaks it. I've now simplified this by having a field that just presents the link you copy/paste there.
tl;dr - if you're an OG and want to display your SC, be sure to double check this setting!
Screenshot below: (Midnight Theme)