Hello everyone,
sorry if I keep writing but I think I have discovered the problem my JSS is experiencing and why clients did not check in against JSS to run policies.
I then went the wrong way and messed up a little the distribution points while the issue is within the database.
In the management framework settings of a newly installed "default" JSS database I have this option to change the client check in frequency

Within my JSS with the current DB I have these setting

If I click Manage Scheduled task I get this

But I can't actually assign a schedule to clients so that they regularly check in.
Plus when opening "Scheduled Tasks created by The Casper Suite" I see this

There are some task which are not defined (unknown and one blacklist*)
Is there a way I can edit scheduled task to fix both the checkin frequency and the unknown scheduled task?
Many thanks again for your attention
Ciao
Carlo