Syncing bookmarks problem

How can I start a new sync line with the windows desktop version of brave.
I have an existing sync chain but I would like to start a complete new sync line.
Actually I have the options to “display the sync code” or to “add a new device”. Below I have the option to leave the chain, but when I try this nothing happens.
So the question is: How to discard the current sync settings and set up a new sync chain?

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Expected result:

Brave Version( check About Brave):

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