I'm going to make a Smart Home Skill on Alexa, but we were failed in the Account Linking part. I have created my skill and completed the configuration part such the Account Link URL, Access Token URI... and something else.
During our testing, our authorization server got client_id, state, response_type, scope and redirect_url successfully. But since we return our code & state by redirect the redirect_url that given by AMAZON, we didn't receive any access token request in our Access Token URI endpoint server, and the explorer just shows "An error occurred while attempting to link Alexa with the external provider. Please try again later.".
I found some solutions in the forum that saying this issue is due to the self-signed SSL certificate, so we are using the SSL certificate signed by COMODO now, but the error still happened. Can we get more information or any solutions here?
Here is my configuration: Account Link URL: https://www.XXXXXX.com/cgi-bin/login.cgi
Access Token URI:https://www.XXXXXX.com/cgi-bin/oauth2/accessToken
and here is my authorization code reply:
Is anyone got same issue and solved it?