TWO-STEP AUTHENTICATION CODES are NECESSARY, because without it, PSN often blocks entry from another device, and also to save our and your time, so that the seller does not wait until you provide an SMS or code from the mail and you do not wait until the seller takes your order and will ask for these codes.
▪️How to enable two-step authentication?
Select Settings > Account Management > Account Information > Security > Two-Step Verification > Activate > Select the method of receiving the code via SMS (can be sent to Russian numbers!) or the Authenticator application (you can download it from the Play Market or App Store)
▪️ Where can I find backup codes now? In the console menu or in the web version of your personal account: “Settings” > “Users and accounts” > “Security” > “Backup codes”> THEIR TYPE OF NUMBERS AND LETTERS: 3dGE67, T69Hee, P6yrD2, etc.