Quartus 13.1 License

We're forced to maintain an old design that make use of Cyclone III FPGAs, unfortunately locking us to Quartus 13.1 tools. However some features I need access to require a license. Features such as the SignalTap, infinite PCI Megafunction functionality, and .rbf generation.

I read that licenses are not issued for this version of the tool anymore. How do I go about to activate those features without a license?

-Phil