Updating when I dont have invoice number

I bought the pro version more than a year ago and the asset store doesnt show my invoices that far back.

How can I get to the update?

Hi

You should have received a pdf invoice from the Asset Store when you made your purchase. You can use the invoice number in that to download the latest version from here: https://www.arongranberg.com/astar/download. Usually the latest non-beta version is also available in the Unity Asset Store.