@PolarPixie I moved your post over to the iOS space.
To clarify, are you unable to find your My Thumbs Up playlist in your collection?
Or were you unable to view the Thumbs showing in your profile?
Feel free to send me a screenshot of what you are seeing as well.
(Please note you won't be able to attach images via email - you will need to open this Community link in a web browser in order to provide attachments)
Thanks for working with me on this.