When you wrote “so i move the folders into my folder structures”, what did you do there exactly?
Did you have e.g. “you’re” folder “content/materials” and moved the packages materials in there? that would be wrong.
Use the complete folder structure from the package and copy it UNCHANGED in youre own “content” folder. the root content folder so to speak within youre project. even tho this might create one or some new extra folders in youre “content” folder, this is the better way to do that.
Also you can try to use the “migrate” function from within UEd.
An idea for the wrong engine version would be to right-click on the .uproject file and then choose “switch unreal engine version” from the menu in the windows file explorer.
hope this helps.