It used to be also a squared code consisting of 12 digits, you could receive via SMS to 22122, but this method is deprecated or already even terminated. Has any

It used to be also a squared code consisting of 12 digits, you could receive via SMS to 22122, but this method is deprecated or already even terminated. Has anybody tested it recently? https://www.giga.de/tipp/briefmarke-per-sms-an-22122-erhalten-so-gehts/#so_bestellt_ihr_eine_briefmarke_per_sms_alte_methode https://www.giga.de/tipp/briefmarke-per-sms-an-22122-erhalte...