All account logins are secured with MFA (Multi-Factor-Authentication). This is set to email MFA as standard, but users may swap to OTP-App based MFA (e.g. Google Authenticator or Authy).
Navigate to the login page https://localcoinswap.com/login/ and enter your email address/username and password in the fields.
When you see the green message, navigate to your email inbox and click the Approve Login button.
When you see this message, navigate back to the original tab (where you entered your email and password) as this is the one that will be logged in.