Installing Alexa Media Player

I need some help/advise to install Alexa Media Player.
I follow all the steps up to where I do the 2FA - firstly copy the long code from amazon then paste it into HA Alexa media player setup and the copy that 6digit code and paste it back in amazon 2FA page, then it open a alexa (amazon) login pop-up that looks a bit dodgy, when i put in my AZ credentials the process stops there and keeps that AZ pop-up login open? I tried opening it with different browsers multiple times with no luck. Any advise…?

Check out [Solved] Installation keeps looping the login page · Issue #2517 · alandtse/alexa_media_player · GitHub

Thanks!
The solution that worked for me was at the final amazon login page, after you pasted the 2FA codes, to select “Create an amazon account” and used my normal login info, them amazon will return and say that the login details “already exist”, then click on “sign in” again and proceed normally, then mine worked.