One question, the references are only paid once? example: my referral uses the browser and I am credited with the bat that month. Already for the next month they give me the bat again if he keeps using the browser?
No, you only get your payout once for every person who downloads, installs and then uses the Brave browser for 30 days.
I belief the 30 day requirement exists for security reasons. That way the risk of this system being exploited with fake accounts is lower. Also the referral program aims to bring new, active users to the platform. Using the browser once and then removing it is of no benefit to Brave/BAT.
Thank you for spreading the word about Brave!