I have an old licence since 18 March 2014. And now it is expired. I want to use ist with old version of WireframeSketcher. But it doesn't work.

Hi Kadir,

Your license is perpetual and you can use an older version of WireframeSketcher that is covered by your maintenance period. See this article for more details on how maintenance works: http://wireframesketcher.com/support/license/why-do-i-need-to-renew-if-license-is-perpetual.html