There isn’t a default spin it’s set when you setup your account on my Skoda, if I recall correctly. I found this advice on reseting it
I found you cannot do it through the mobile App. But if you log on with a computer its easy.
Go to https://www.skoda-connect.com/
Login
Click on the little face top right hand corner of page.
Click Settings
Notifications will open but click on the right hand tab: S-Pin
Then drop down the menu on Reset S-Pin