I'm currently in the process of account linking upon launch with an Alexa Skill. I've referenced a deployed server that I've created that would have a simple login page as the Authorization URL within the Developer Console. I've then referenced a Launch Request to emit a Link Account Card when the application is launched. However clicking the Link Account button within my Alexa App renders a blank page (instead of an appropriate login page).
However enabling the skill on the web dashboard - it does direct me appropriately (see image below).
Why does enabling the skill within my web browser direct me appropriately but the 'Link Account' button within my Alexa App render just a blank page?
Note: Within my developer console - I have not specified client id, client secret, etc. since I simply just want to verify that a page can be displayed.