Is it possible to use Cwicly without the Cwicly theme?

Thank you for the clarification, @paulshadwell.

This unfortunately suggests that the BuddyBoss theme isn’t compatible with FSE, meaning you won’t be able to take advantage of templates and the Cwicly Themer.

Do any errors appear in your browser console log?
Thank you in advance.

This would suggest either an SSL or HTTP authentication issue.
Please see this thread for more information: Why are my styles not being properly loaded?