Ich habe genau dieselbe Meldung (am Notebook mit Windows 10 64-bit). Wenn ich den Beitrag über den Button vom iPhone aus teile funktioniert es einwandfrei.
I uploaded the right version (5.6.4) but the folders out of the zip are not there. Do I need to add those by hand and add all the files in the folders myself (like admin, assets, etc.)?
I was in the right folder but contact-form-7 was not there. Now i created a new folder and uploaded the files from the .zip, but it is still not working.