We have Server for ArcGIS 10.7.1 on our local servers, which are http only. (no Portal or Web Adapter). In the past, we created the app and edited it through ArcGIS Online, then downloaded the code and installed that on our local servers. We create the initial web map on ArcGIS Online with map serview we publish from mxds on the same local servers, but with an https proxy for the REST endpoint.
I used the developer version of WebApp Builder hosted on our local servers in the past to create web apps with custom widgets. Now I am trying, but I cannot load the editor (server.dot.nycnet:3344/webappbuilder).
Is this because our server is http? Or should I upgrade our WAB install? The last time I used it was fall of 2020.