Earlier today I received an SMS message on Skype from my medical provider wanting to confirm my appointment for next week. Attempting to confirm, I replied "YES" to the prompt. Unfortunately, when replying with this, I get a "SMS delivery failed" message:
I even tried "Yes". :P
This occurs with Droid, Windows, and Web. I can send SMS messages to other numbers just fine. So why am I not able to confirm my appointment with Skype?