Changing the output style of blog articles

After buying this theme, I noticed that the blog articles are displayed in a format that does not recognise paragraphs also the picture output is using the preview style. I am unable to find a way of changing this output such as reducing the size of the picture and creating paragraphs.

best of luck, i am having the same issue and just lost all hope of a fix after seeing you did not get a reply to your issue after 13 monhts