27/5 updated ok. 30/5 not, 31/5 not, 1/6 not, 2/6 not, 3/6 not.
Surely, with so many of us all with diverse systems, surely the problem is not gonna be blamed on an update to OUR systems. At the risk of further distraction from the Actual source of the current problem, I am using Norton Internet Security version 188.8.131.52 on fully up-to-date Windows 8.1 Pro with Media Centre; Personal Plus 2016 (since Nov'15). I see no messages in Norton history saying anything about firewall blocking incomings (in the time frame of requesting price updates, nor to do with Reckon).
What would help if someone were to report they HAVE gotten US price updates successfully since 30/5, then we could know it is our systems (probably) rather than Reckon's that are broken; and we would know a system configuration/environment that does work, making the problem solving massively easier.