Ah, yes. Version 4.4.10 is quite old, indeed. You're not alone, I've done plenty of upgrades from it to 4.7 recently.
As Miss_B mentioned above, if you remember who it was you can try contacting them again directly. If you don't remember, or they're not available anymore, you can find someone new in the Providers list with the Upgrade Services badge. We are both on that list, too.