Gmail 2 step verification is safe and secure your gmail account from hackers
open gmail account and go to the settings options
Step.2 go to security. On 2-Step verification click “Settings”.
Step.3 Click “Start Setup”
Step.4 You’ll get a text-message on your cellphone with a code. Enter the code. and click next
Step.5 Click “Confirm”.
Step.6 Click “Do this later.”
Step.7 Next to “Mobile application” select Android or iPhone.
Step 8. Gmail will show you a QRCode.
Step.9 Open the Authy App and on the sidebar click the “+ Authenticator Account”. Click “Scan QR Code” and use your camera to scan it.
Step.10 Enter the “Token” that you see in the screen on “Code:”, then click “Verify and Save”. You’re done.
These steps just be for your information taken from any other informative website so i think these presentation enough for your help for Gmail 2 Step verification method either consult with technical support of Gmail account who will give you the complete satisfactory solution about gmail issues or any other information for gmail account security.