Also I must mention that when I registered with MeeTeleGram I did not get any SMS, but what I did get was the message in Telegram desktop. However, I am not sure if this is a bug of MeeTeleGram itself or a bug of my mobile operator (I have transferred my number to another provider recently)
I also got message on my telegram desktop and I didn't get SMS.
Everybody is a newbie in the beginning. It is an important lesson I think, to remember that and try to treat all people with respect.