I'm sharing my app market ID with a friend, when I clicked [Restore Purchase] and my friend's ticket

When restoring purchase history, the purchase history of the currently logged in App Store/Market ID will be restored.
When restoring purchase history on your current Lysn account, if you have purchase history on another App Store/Market ID than the one you are currently using it, that purchase history will not be shown on Lysn.

In order to restore the desired purchase history, you must log in to the app market ID which was used for ticket purchase and then proceed with restoreation.
Please check this situation in your App Store/Market.