Hi, Venicia Creations,
Thank you for posting here and letting us know! We just performed a check and found out that the incident is related to caching.
Luulla uses strong caching method to ensure that your store, items and pages on the site is returned to the user as fast as possible.
In this case, you might be fetching the cached page when you hit the list page after signing in, and not the latest copy of the list page.
The next time you hit on such incident, you can press the F5 button to force the site to refresh and return the latest copy of the page to you and the comment box should appear again.
If this problem still happens in the future, please let us know again and we will open a new ticket.
Thank you for reporting this to us!