I just received a email from PlayStation that reads
Redeem your special Free $10 Gift from VRV (No Credit Card Required) and download the VRV App on PlayStation®Store to get a taste of the VRV Premium experience.
don't know if it's YMMV
just recieved another email from VRV:
Due to high demand, some users experienced errors with our gift code system this past weekend. We've resolved the problem and hope that you'll give us another try!
Below is a Virtual Gift Card number worth $10 that can be redeemed directly on VRV and used for Combo Pack subscription to access everything on VRV ad-free.
😍it worked now