Using 3.2dev20200928 on Debian 10. This morning when I checked the daily backup I set up yesterday on the test Wordpress website - I found only the database sql.gz backed up. So I did a manual backup of the web files. This worked but the database backup disappeared. If I backed that up again the web files tar.gz disappeared and so on. It appears that on both automatic and manual the number of backups made is one. On Ispconfig 3.1 - it's 1 copy of all - so if you have two databases you get three backups. When I increased backups to 2 I could backup both database and web files. But I don't think that's the meaning of number of backups.