Hi Christian,
As mentioned in the other thread, please try using the other methods to send your backups to your new destination site. I’ve copied the methods below:
Here are the four different ways which you can choose from (instructions for the first two are then provided):
Install the UpdraftPlus Migrator component on your source website, and send the backup over directly. (Press the “Clone/Migrate” button on the source website, and follow the instructions shown there).
> OR, download the backup set from your source site (or from your Dropbox, or wherever you stored it), and upload into the ‘Existing Backups’ tab on your destination site.
> OR, set up the destination site to use the same remote storage (e.g. same Dropbox) as the source site, save your settings, and then press the “Rescan remote storage” link in the ‘Existing Backups’ tab on your destination site.
> OR, download the backup set from your source site (or from your Dropbox, or wherever you stored it), and use FTP to upload into the UpdraftPlus folder on your destination site (wp-content/updraft), and press the “Rescan local folder for new backup sets” link in the ‘Existing Backups’ tab on your destination site.
Thanks,
Bryle