on all my hubs not just one and tested over att access point as well as comcast my watchtower links just load and hang ..
other cloud services like cloud dashboards seem to be working.
Since what you are using is not built-in (at least based on the name it doesn't seem to be?), it would probably be most helpful if you:
- linked to what it was so other people could see; and
- performed troubleshooting with the developer or code yourself first to see if it could be something on that end.
its working again.. must have been some sort of cloud issue but not sure why other cloud services were ok at the time.. it would have nothing to do with that specific developer or app as the local version worked fine etc.
Sure it could. There are size limits, rate limits, and other concerns that appear with cloud that won't come up with local. (I didn't ask for no reason. 
)
In any case, glad it's working now!
given thats the case we need a way to check somehow if any of those is a reason we are being blocked?
Logs > Cloud Calls exists for the cloud calls, which I think is the only new piece. Depending on what any other problem might be, it's likely you'd get clues in "regular" Logs, but that would require knowing more about the app and what it does (and therefore what any problems could be), one reason I suggested sharing this information.