Embed Widget no longer works

[StuartHarvey]

After the update, the Embed Widget seems to no longer connect to AGOL URLs for Dashboards and Web Apps that worked previously. The message I now get is: 'Sorry, this content could not be embedded. It may restrict the embedding of content from other sites'

So my question is, Is there a way to re-allow access? 

[Anonymous User]

Embed still doesn't work for me. The link I want to embed is held within the attribute table of the feature I'm selecting and changes depending on the feature chosen. 

[JoseBarrios1]

Does anyone know if we can embed ".gov" urls on exp. builder?.. I am getting an error:  "Sorry, this content could not be embedded. It may restrict the embedding of content from other sites" The link was working before, not sure what happens! 

JB