Error message: “Installation failed: the destination folder already exists”

Hello,

to the prehistory of my problem:
while editing the page everything went well. I used the theme OceanWP and worked mainly with the plugin editor. After I changed the domain of the page, bugs appeared in the design. For example, pictograms/icons were no longer displayed correctly. After that I saw that an update was offered for Elementor. So I clicked on update automatically. After that I got an error message saying that the server is overloaded and I couldn’t access wordpress for a few minutes. After the page was working again, I noticed that Elemetor was gone. With it also all the settings that were made with this plugin. So I tried to reinstall Elemetor. Since it is no longer listed on the list of all plugins. When I did that, the error message: “Installation failed: the destination folder already exists” popped up. Now I really do not know what to do. Is there any way to get my settings back. Unfortunately I don’t have a backup.

Thanks in advance.

The page I need help with: [log in to see the link]