Highend Theme Minimal – Portfolio issues

Hi there!

I used your theme for the second time for a WP site now. You have done a great job! 😉

This time I would like to use the minimal theme and I have already imported all preferences and content. Now my site looks quite the same like your demo, but…

The hover effect in my porfolio differs from yours. The words “DETAILS” and “ZOOM” show up moving the cursor over the images. (https://hb-themes.com/themes/highend/minimal/work/) In my portfolio I only see a large “+” as hover effect. What is the reason for that?

Two more questions: I like the design of this portfolio site a lot! I just would like to add the “category filter”, so the user might sort the projects by category. How can I do this? (without using a different site template)

I would like to add more than just one image to each project in my portfolio. (i.e. 3 images in one project) What is the best way to do this? (a slider or a kind of gallery on each project site i. e.)

Thank you!!!
Niko