I did the try the plugin earlier (version 1.2) and it worked perfectly.
I tried the plugin on a new website with the new version (version 1.3) and started a manual backup. The backup is not ending. There is a message
17:18:12 : Approximately 151% complete. View uploaded files»
I fear the backup is not going to finish now!
When I click on view uploaded files it shows a list of files which look like plausible WordPress installation files.
Any help would be welcome.