Could someone please address this. Thank you in advance.
Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.
I read your question, but didn't really understand, what do you want to achieve? Can you try explaining your issue again?
It isn't possible to grab the userId or login information when account linking, as that is separate from the Alexa side of skills.
2 People are following this question.
Does / can Alexa replace its generated UserId for a linked user?
Account linking keeps expiring
Account Linking not working for Skill
How do I get my gmail address after account linking with google
Amazon account linking on the Android Alexa app.