If you are looking for the Simatic EKB Install 2013 today, you are likely working on a or an older PLC (like the S7-300). However, using unofficial license managers carries significant risks:

The "2013" version specifically targeted the software versions popular a decade ago, such as and Step 7 v5.5 . Key Features of the 2013 Utility

Are you currently trying to from 2013, or