Horizen: ZEN 5.0.0 will perform a hard fork upgrade on the mainnet on February 7. After that, transactions involving blocked addresses will not be possible.

Horizen posted on the Officials stated that after the hard fork, users will no longer be able to conduct any transactions involving shielded addresses, so users are advised to move funds out of the shielded pool before then and not to deposit funds directly from shielded addresses into trading platform wallets.