You may need to edit the database (something I cannot do, as it will have secure access). Go to the WordPress post meta table and search for Starke-Conde
to find the record that has the incorrect data stored.
You may need to edit it manually and save it.
Then you would need to rebuild our cache in the form.
The best way to update in your circumstances is to download the latest version from Your Account. Is this what you did? Did it download as a zip (archive) file? Macs have a default setting to unzip/extract these files if using Safari, and you can’t install that unzipped file structure. This is what I suspect has happened.
If you have WordPress 5.5 or more recent, you can update using zip files by using the WordPress Add New Plugin -> Upload option without deleting the existing plugin.