dataloader.io logs you in to an active session and you are not able to log in to a different account

Issue

You access dataloader.io, click on Login with Salesforce, select (or not) your custom domain and Environment, click on the Login button, and then dataloader.io logs you in as a user that was used before, without asking for a username and password.

You don't find any way to log in to a different account.

Cause

This issue happens because dataloader.io uses an active Salesforce session.

Solution

To solve this issue you have more than one option:

1. Log in to Salesforce with the same username, then log out from Salesforce and dataloader.io.
   After that you will be able to enter a different username when logging in to dataloader.io.
2. Second option is to clear your browsing data so any cookies are removed and then there is no active session available the next time you try to login.
3. In case it is a one time situation that you need to login to a different user, you can do it from a private browsing window (like incognito mode in Chrome).