For those considering doing business with Digilent: Currently, after you’ve purchased your hardware (AD3), it seems you'll be required to sign up for an account with them to be able to download the software necessary to be able to use it. Signing up for an account requires that you accept and be legally bound by their policies.
This is different than Rigol, Siglent, R&S, Nikon, _even_ Keysight, and most other major TE companies I know of, who allow anyone, customer or not, to freely download any required software to operate their products.
(Edited to hopefully clarify...)