The the Tabs from Other devices are not implemented in the initial release of Sync v2. The only syncing of tabs are the tabs that you open manually and type in a URL and those are limited to the last 4 most recent tabs. See the one sided conversation that I had with myself is 2+ week old thread here where I had to discover why I was seeing this behavoir.
As well this conversation that I had on Brave’s Reddit channel here may be of some help.
So when exactly is sync going to be released for Android? Would have been nice to have been told before hand that it wasn’t working yet instead of wasting hours trying to get it going.
Been down that road using the beta test for 2 weeks trying to get an answer on why I was seeing a particular behavoir wrt Open Tabs. Its bad when end users have to do support for the product and spend hours looking for answers and filing bug reports on gethub to finally discover the answers.
Turns out that Brave DOES sync Pinned Tabs, but only shows 4 tabs per device. Since I usually have more than 4 tabs open the sync never gets to the pinned ones and as such they are not accessible from the other device.
Well ya that was a frustration I endured for 2+ weeks wondering what the heck was going on after several posts in another thread here. They also have not implemented Tabs From Other Devices. see the prior links in my post re Open Tabs <> Tabs From Other Devices.