Brave Rewards - Syncing Across Devices?

Hi, I am new to this so I apologize in advance, I use Brave on my android, iPad, and laptop. All are synced together. My first question - are the BAT tokens individual for each device you use or it all adds up/syncs into one wallet? Secondly, when do you see them populate into the wallet? Is it once per month? I’ve clicked several ads sent to me and nothing adds up into the account. Thank you in advance!