Brave Rewards given without my autocontribution authorisation

My Brave Rewards have all gone. I never authorised autocontribution as I wanted to build up an amount first.
I’m so glad I didn’t transfer more Bats into Brave!
Can you please explain how you were allowed to clean up my BAT please without my authorisation?
Can i get them back?

Closed as duplicate of For Brave users impacted by the Auto-Contribute bug