energetic

Some time passed by now, meanwhile I had FTP-access and I had a look into the files directory named wpclone-temp inside my wp-content directory but there are no such files like leftover files from the restore. Any other clue?

I tried to do a restore with a fake url according to your proposal for several times, afterwards I always performed a backup but the size was still always 1,37 Gb, so nothing got deletet. In the moment I do not have any directory access via FTP or similar so I can not look directly into that folder, I am trying to get that FTP access asap from our IT-Guy, then I can check that wpclone-temp directory for real, but so far I still have the same problem.

add:
so are this 80 files useless and can I delete them? (once I know which files)

add:
in WP Clone SYSTEM INFO, it shows that there are 80 files more to backup on the test-website then on the LIVE-website … so why and where do I have 80 files more … I just cloned my website…should be 1:1 the same in files …. or not?

Great, thank you very much, now it works.