Pls i installed veronika theme and install the default plugin. I wanted to test publishing. i selected product category and filled all necessary field but each time i try to publish. It takes me back to step 1 with category unselected and tells me invalid category selected. I do it all over again and still looping me back again. Please how do i fix this

I have solved the problem. I discovered that in os class settings allow user to select parent category was disabled. So i enabled it and it works