I can't add categories to the portfolio items, The whole option is missing for the right sidebar.
Attached files: Screenshot 2018-12-23 16.59.33.png
I got the categories to work, but the pictures don't link to a single portfolio item pages. Also, the menu looks jumbled.
Attached files: Screenshot 2018-12-23 17.23.16.png
did you use the demo data importer?
Please provide the wordpress login details and the link to the website.