Thank you for your message and I apologize for the inconvenience.
I see that you have 1 portfolio with 16 stocks under your account, and you won't lose them by reinstalling the app.
Make sure you are logged in with the email you registered with.If you don't remember which account was used for registration, use the email address that receives email alerts from Seeking Alpha. If you forgot your password you can always recover it, simply follow the “forgot password” flow.It is possible that you spelled your login email incorrectly and created another account by mistake.
Customer support service by UserEcho