Welcome to the Community - thank you for your question!
You can disconnect the account by going to Banking > selecting the pencil icon within the blue box for the account you would like to remove > select Edit account info > tick the box at the bottom of the page 'Disconnect this account on save', then Save and close.
You have clicked a link to a site outside of the QuickBooks or ProFile Communities. By clicking "Continue", you will leave the community and be taken to that site instead.