Pastel only support the last 3 versions. Last year Pastel Version 14 was launched, but Pastel Version 10 has still been supported.
As from 1 October, Version 10 (your version) will be considered "end of life". This means that instead of upgrading your software, which you can do now, you'll have to buy a whole new package.
Upgrading to the latest Pastel version is usually about half the price of buying it new - so upgrade now (by 1 October) before it's too late.