https://script.google.com/macros/s/AKfycbz05MyWn_hJwj8_dRtNFHHWRQVwzrJ-jr8p-i4JtQ/exec
After submiting Your settings, a new Trigger will be set automatically.
The CleanUp will be done every day between 1am and 2am.
The close button can only be used, if the GUI is opened from a Spreadsheet.