cloud backup

I'm trying to backup to a S3 compatible bucket in Google Cloud Storage with the Amazon S3 backup extension No matter of what url I use, i got always this error: Error: Unable to upload a file to the storage: Invalid argument.. Make sure you have granted the permission for multipart upload of files

Hello, I'm configuring a backup into a remote server through FTP(S) from plesk. The FTPS uses port 990 in the cloud server and I have tested the FTPS access into the cloud from different platform and it is good. However, from plesk I'm getting an error.

Hi. I tried to send a full backup of the server to the onedrive cloud. This worked, but I noticed that ~50GB of local diskspace have been used up. To get down to the issue I deleted both onedrive backups which resulted in the message "undefined" and no further error-description. The backups are...