Deal with 3 errors in an Opencart website's back end:
1. Eliminate "Permission denied" error from everywhere,
2. Re-install vQmod. 2 extensions installed by vQmod are shown in "Modifications", but can not be refreshed. Suspect the problem is connected to the faulty installation of vQmod. Resolve this issue.
3. Unable to install correct Google category in "Feed". The software is trying to install one of the product categories instead of allowing the correct Google category.
The site is up and running - all the problems are at the back end