If you are having issues accessing the roster try the below options before Pushing the "Request Access Button".
If you click the Open button from the Roster email and you see the message below "You need access" page
click on the email address below the words "You are signed in as"
Hopefully it will changed to a screen like the one below that says it will send a verification code to your Troop email address. Click the Send Button.
Your Troop email address should receive the access code to insert into the webpage that appears after you click Send.