Why can't I transfer collectibles to another user?

In order to prevent fraud and make VeVe fairer for all collectors, the ability to transfer collectibles and comics between users has been removed.

VeVe was built for collectors by collectors, so we get as frustrated as you when we see bad actors keeping coveted pieces out of the hands of passionate fans. With the recent uptick in activity despite disabling Gem transfers and announcing
KYC, it is even more clear that the brazen attempts to manipulate our drops and
secondary market needs to be met with more drastic measures.

Collectible transfers are now temporarily disabled until we are able to
implement overall KYC and/or other Market listing thresholds.

You can read more about this at https://medium.com/veve-collectibles/veve-app-update-transfers-kyc-235cf007783d