I created two different web map applications using the available templates in ArcGIS Online. At first these web map applications worked great, but now they open slowly and the base map data is missing. Has anyone else ran across this? The only change I made was to access via https instead of http so that the "My Location" feature would work on mobile devices. I tried switching them back and they have the same problem. All of my data layers are accessed via https and everything shows up great in the web maps (which is used as the basis for the web map applications). I can use the web maps to create applications in WAB and those work no problem. It just seems to be these that I created using one of the templates. Really strange! I even tried creating brand new web map applications using the same templates and get the same result of no data in the web map application. I put the link to the websites below.
1. Directions Web Mapp Application - https://onslow.maps.arcgis.com/apps/Directions/index.html?appid=24758cf9f9de4ed488c090b22ea061c5
2. Smoke Alarm Installs Web Map Application - https://onslow.maps.arcgis.com/apps/View/index.html?appid=676498bcd8d544799355eddc23fad840