Opencart 3.0.2.0 & Journal 3.0.23 - Category Setup

Looking for guidance/assistance with setting up the Category listing on an OC 3.0.2.0 with Journal 3.0.23. Having the worst time trying to figure out how to configure the Category display in Journal.

All our products have been moved across to the new site, and each has been set up to their category/subcategory/sub-subcategory. What I cannot determine is how to import that structure into Journal for display.

The current site (OC 2.0.3.1) has a three level category structure (see attached image) and hoping to continue that with OC 3.0.2.0

Thoughts and ideas would be appreciated.
Thanks,
John

Well, better try here first, it's a paid Theme matter, after all:
https://docs.journal-theme.com/

Already had a look there - the published information is for v2, which is substantially different from v3 - so hoping to find someone who has been through the process already.

Contact the Journal support team to resolved this issue.

You are using one of the most cumbersome web themes. The Journal theme will clash with many 3rd party OpenCart extensions.

Anyway, to try out your 3-level categories and their products: First test it all out with the default theme. If it works there, but not when switching to Journal3, then you'll have to bite the bullet and ask the authors of Journal3 for help.