Hi RichardA
Sorry, thinking through the night, I may have misunderstood your last post
If you mean they checked the hosting logs for clubjazz, (which you should be able to see as well from your control panel), then they are correct, no error found.
The reason for no errors is because no errors would be present within the hosting logs, due to the issue most likely been DNS/NS related.
That is why I thought you meant they checked the DNS logs, which thinking again last night, does not make sense not finding an error, as TG and myself both ran manual lookups which failed, so at the very least, these failed lookup should be present in the logs for NS/DNS. That said though, as I stated earlier, these logs become very full very quickly, so they have a tendency to be short lived before been deleted/overwritten
Did you open the support ticket to specifically have the nameservers corrected.
Many thanks and sorry if I am causing confusion
John