No bookmark & history synchronization

Hi everyone,
I have absolutely no synchronization for my bookmarks. I am using brave on an Android smartphone, an Android tablet, and 2 Windows desktops. At first, when I created the synch chain, everything came together, and I also had several times the same bookmark in my bookmarks, which was of course a huge mess. I spent a lot of time to rearrange and clean everything from one of the Windows desktop : it was clean and rearranged only on this device, not on the 3 others.
I also have no sync for the history : I can’t see from one device the visited pages from an other one.
How can I fix this ?
Thank you

Brave Sync v2 is being worked on. This will add more sync option (history, tab, etc).