After disabling port scanning a couple days ago, the blocking of my NAS and some websites seems to have subsided, though I cannot say it is the right speed etc. without some more testing, which I don't have time for right now.
The 'rules' logs do show that before I turned off port scanning, the NAS was scanning and being blocked (image named withPS), and the other image is the list of the latest rules.
That said, I'm still getting multiple entries per minute numbers of entries in the 'blocked' logs, and it shows no rule, and also links to no application most of the time. I have tried editing it to allow 'all / all' and then deleting the rule (that the system says is not a rule) but still no change. I changed the setting 'if there is no rule, then...' to 'allow' instead of 'auto-decide' and the log still runs, but the 'no rule' entry in the rules column is blank. But the 'show application' still goes to nothing in the app manager.
The uncertainty of what is going on and the lack of control is what is getting to me now.