The steps for Navicat Cloud account to disable two-step authentication are as follows:
1. Login to Navicat Cloud Portal.
2. Click on your Navicat ID in the top right-hand corner to open the Account menu.
3. Click Settings in the Account menu and select the Security tab.
4. In the two-step validation area, click Disable Two-step authentication.
5. For security reasons, you must re-enter your password to disable two-step authentication.
6. Enter the 6-digit authentication code generated by the validator application.
Login Navicat ID Account
About the authentication code application:
Although the market has a variety of applications can generate for login Navicat Cloud account authentication code, but Navicat website suggested that you choose Google Authenticator set two steps to verify.
Google Authenticator (IPhone)
Google Authenticator (Android)