General things you can do
If you see that embed code is inserted and formated properly, but still do not see widget. Do the following actions
So these instructions should help you to debug your site issue. Also you may refer to this article if you get white screen
Developing application takes a lot of time. You can support application by donating. There is no company behind this application and it takes away my free time. Every donation matters and does not matter how small it is!