Joomla hosting permissions and image size issue

Hi, I need some help to fix some problems related to the hosting settings of this size: [login to view URL] I can't update joomla using the automatic updating, I can't update extensions and so on. Please consider that the site was developed in a different location with a different provider. After the first development I moved the entire site using Akeeba to the final location. Otherwise I have some other problems: some images look larger than in the previous version. Here you can find the final destination: [login to view URL] Here you can find the original version: [login to view URL] So I need to fix all problems to allow me to ensure that the site will work in the future using auto update and all its functions. Regards! Ea