Hi,
It appears that the restoration failed partway through, leaving the site in the broken state.
The subsequent attempts to restore were blocked by the existence of unremoved folders from a previous restoration.
Before you can attempt the restoration again, you will need to delete the old directories from the site. If you have access to the UpdraftPlus settings page, you should find a button for this purpose at the top of the screen. You can then attempt the restoration again.
If not, I would recommend resintalling WordPress from scratch, and repeat the restoration.
Best Wishes,
David N