I'm guessing you already checked the docs, https://docs.mendix.com/appstore/general/share-app-store-content#adding
Make sure the content is published, and not still in draft and make sure you are signed in within your Studio Pro with the correct account (if you have multiple). The dots beneath the starter apps (if there are any) are to go the a next page where your template might be hidden.
Seems like it’s an refresh issue, now i can able to see it under Starter apps. Thanks for looking into this Sjors Schultz.