GAE app working fine on appspot url in EU but does not even load in US

[BLONDEV INC]

We deployed an updated version of a GAE Standard Python3 Flask + Vue.js app from Ireland about an hour ago. 

The app is running on the appspot.com url just fine in Ireland. 

But when we go to the url from the US, we get only a blank screen.

This is the second time this has happened. 

Last time it fixed itself after a few hours. 

Has anyone had this issue before?

Why is it happening?

Thanks.

[George (Cloud Platform Support)]

Is the issue still affecting you? Has it disappeared by itself, as last time? How long did it last? 

App Engine is regional, so deploying your app in a European region secures optimal performance and minimal lag for the chosen region. For the time-frame you indicated, there is no outage that may explain your app becoming inaccessible from a US region. There may be other factors explaining this occurrence, but a thorough investigation needs information that may be private in nature. Groups threads such as this one are unable to secure the needed level of privacy. You are encouraged to open an issue in the Public Issue Tracker, if you consider a full investigation worthwhile.