Each point is valid for 24 months after the first day of validity of the travel document for which the points were credited. Points older than 24 months are automatically erased from the account. Erased points cannot be used subsequently. Two items are visible in your loyalty account:
If you purchase a travel document e.g. from Prague to Benešov for CZK 74 on 15 December 2014 with validity of the travel document from 16 December 2014, then the 7 points thus earned will expire on 16 December 2016.