Get the blue badge forever (for now) on X just spend ad $5

For any account that runs advertisements, you must spend at least $5. Once your advertisement has been halted, you must simply wait until X gives you a complimentary badge (about 1-2 day) . After that, you are able to close the advertisement, and you will receive the complimentary blue badge.

This work when your account not currently subscribed to premium.

Note: I say forever because I have try 6 month and the badge not lost. (for now)