Hello Flynax Team,
I thought I figure this issue out, most of it is, but I am still stuck on a small problem. When posting an ad (I am only testing in the vehicles listing type and the cars category) but when I post an ad to that category, in the preview page, (after putting in all the ad information) the Common information (group header) is missing (but not the form data (ex: Title & Description is still there, just missing the group header).
I restored the whole (general_modern) template folder including all sub-folders, and I am still not able see changes. Can you have a look at this issue? In the mean time, I am going to remove the previous templates from the server.