I have configured the pop-up on the mapservice below, via Portal 10.3, but it stopped working last week - though it still shows all the configured details. When I click on a feature (eg yellow trail to the right of screenshot), I get nothing, no pop-up, no response.
I have created an app through Web Appbuilder (via Portal) and it is based on this map.
And in the app, the pop-ups work!!
I feel like i'm going slightly mad!
Any help would be appreciated.
Kind regards, Erin