Syncing of devices (windows and iOS)

Description of the issue:
Sync Problems. I am trying to sync my devices for the web browser but it always sends an error which is “The Sync Agent is currently offline or not reachable. Please Try again later.”
Steps to Reproduce (add as many as necessary): 1. 2. 3.

Reproduces how often:
It always happens. I tried it many times and never synced once.
Brave Version(See the About Brave page in the main menu):

Version 1.23.73 Chromium: 90.0.4430.85 (Official Build) (64-bit)

Type of devices currently running on the Sync chain in question:
iOS and Windows
the iOS version is 1.19(
Additional Information: