Log Out from Questrade
To add a second Questrade account your will need to make sure you logout from the previously connected account on Questrade's web app (using the same browser you used to login to Wealthica or using your Mobile device default browser).
You can do so by going to Questrade.com, click LOG IN and make sure you LOG OUT.
The Log Out link can be found at the top right of the screen. Once you are logged out, you can repeat the add investment process within Wealthica.