francoism Hi
PROBLEM 3:
Have You tried to select the checkbox below?
PROBLEM 1:
Actually, there is a problem to Your joomla which may be affecting it. I can see an error coming from Your administrator template and there are elements missing/reordered in some layouts. I would advice to reinstall joomla. The visible issues indicates changes to joomla core files, so it may even be a hacking attempt.
PROBLEM 2:
Probably as in PROBLEM 1. I can see same javascript error from template which is making some of the option unusable:
Uncaught TypeError: Cannot read property 'click' of undefined
at HTMLDocument.<anonymous> (template.js?2567f51e437e004d9b0c01b3b07cd87c:178)
at i (jquery.min.js?2567f51e437e004d9b0c01b3b07cd87c:2)
at Object.fireWith [as resolveWith] (jquery.min.js?2567f51e437e004d9b0c01b3b07cd87c:2)
at Function.ready (jquery.min.js?2567f51e437e004d9b0c01b3b07cd87c:2)
at HTMLDocument.K (jquery.min.js?2567f51e437e004d9b0c01b3b07cd87c:2)