Bookmarks no longer syncing between Mac and iOS

Description of the issue:
My bookmarks are no longer syncing between Mac and iOS.

Steps to Reproduce (add as many as necessary): 1. 2. 3.
Not applicable.

Reproduces how often:
Not applicable.

Brave Version(See the About Brave page in the main menu):

Type of devices currently running on the Sync chain in question:
iPhone and Mac desktop.

Additional Information:
My bookmarks have not been deleted, but changes made to bookmarks on one device are not reflected on the other device.