Problems!

Hi! As yesterday i already said…and as somebody else already said….my site looks ok everywhere including all posts. However, on pages, the sidebar flips down below or under the content. Even without any page-content the sidebar moves! And i have literally tried every page template possible including the index template.
Its like the page functions somehow disturbs the layout , becuse, as I said, even without any content at all the sidebar moves, sometimes cousing problems also with the headpicture in explorer.
The second problem is related to the pages…When i create a new page, i write the text i want to see on it and than i save it.The problem is that in the blog i can see the link button to my page, but when i clikc on it nothing is happening and i can’t see the content of my page
And another thing is that when i choose a category is not simply showing the posts of that category but keep showing all the posts…
Any info about it?!
the blog is this…
https://www.andreavascellari.com/blog/
Thank you!
Andrea