No, the reason they won't let you buy it is because they are out of compliance and have been for a long time.
Trading in PZOO is currently restricted to liquidation only by brokerage firms. After 9/28/2021, you probably won't even be able to liquidate positions.
See post number 21668 for a full explanation.
"Sometimes people don't want to hear the truth because they don't want their illusions destroyed." - Friedrich Nietzsche
"None so deaf as those that will not hear. None so blind as those that will not see." - Matthew Henry