I got the following answer to one of my R* tickets two hours ago
But as far as I'm concerned, when I call Lester, I still can't put a bounty on anyone. It still says "You must be Level 10 blah blah blah"
Aaron B. (Rockstar Support)
Sep 11, 16:37 EDT
Thank you for contacting Rockstar Support.
We understand that you are unable to achieve the platinum trophy or complete daily objectives as the bounties has been disabled.
We sincerely apologize for the inconvenience that this has caused.
We would like to inform you that the bounties has been re-enabled on GTA Online. Now you will be able to set bounties on other players in the game. We hope that your concerns has been clarified.
Kindly let us know if you have further concerns and we will be glad to assist you with it.
Have a nice day!