The behavior you described is not normal, but maybe I don't fully understand your setup.
I would also avise against backing up Roaming folder in appdata and make careful selection of the files you want to back up. Appdata contains a lot of temp files and Roaming is a folder that gets recreated every time you log in on a new machine in domain, so it's not necessary to back it up.
Regarding your questions:
1) New files are taken into account automatically, you don't need to change anything, but these changes will be only applied in case the backup actually runs.
2) You can navigate to C:\ProgramData\CloudBerryLab\CloudBerry Backup\, find enginesettings.list file, open it with notepad and modify this parameter:
<RTBBackupInterval>00:15:00</RTBBackupInterval>
You can set this to any interval you want, but mind you system resources when doing that, please.
3) Not sure what you mean by that, but all the changes are picked up every time the software runs the backup plan.
As for your problem, please make sure you're using the latest version of the software(
6.2.1.34), since it contains vital fixes related to real-time backup functionality, reproduce the problem, and then send us the diagnostic logs via
tools > diagnostic menu. Please add a link to this thread in the issue description.