blogspot.com/b/app-preview?token problem

Blogspot template edit problem extends into a 6 month period. Bloggers continue to face this issue whenever the template option is clicked. If by now you already found a way to troubleshoot this issue please share with us fellow bloggers. If not, just do like I do: Whenever you click 'Template' look to the toolbar towards your top left hand side and you will see the X button next to the forward arrow once before it redirects you to a blank page. The page turns blank because the 'Live on Blog' is not loading properly. Once you have clicked on the X button to stop loading the live on blog you will see this next arrow below and then you will be able to edit your html.