I just had this behaviour. I was able to fix it by finding my customer in Schematic, and then manually applying a Plan to the user. The Components UI in Schematic also lets you choose a company to see how the Portal would look to them. Not sure how to set a default plan on new users. Let me know if you figure it out!
Oh someone had figured it out here: https://www.skool.com/universityofcode/schematic-components-not-showing-in-manage-planpagetsx?p=65dc2fbc Plans -> Configure -> Add Default Then put your plans into the Live list! Plans -> Configure -> Live Plans