You need a mobile to send sms through your computer

I wanted to send sms without my mobile, if I had a mobile I would use it. Im traveling and wanted to send and receive sms to my friends. The first step of installation is to insert your mobile number and they sent a code that you need to enter. I cannot do that step. I spent $3.99 and now I cant use it.

berevgia about mysms - SMS Texting & Sync, v1.3