icloud for windows failing to sync chrome bookmarks

I have tried virtually every conceivable fix i can find but nothing is working.

When i originally installed chrome on my windows PC i also installed the iCloud for Windows app and extension which allowed me to sync my chrome bookmarks to/with my ipad & iphone safari bookmarks.

This worked beautifully until recently. I had been able to add or delete bookmarks from either pc, iphone or ipad and each would replicated any changes made.

This all failed to work recently.

I have logged out of icloud, and chrome, reinstalled icloud for windows, deleted all bookmarks from all devices and restored a copy to chrome. i can currently create and delete bookmarks on either my iphone/ipad and each replicate the other perfectly, albeit with a few minutes lag time. However, my biggest problem, is that chrome is not syncing with the devices. no newly created/deleted bookmark on chrome/safari will replicate on the other.

I am running win 10 with the latest chrome and icloud for windows. I am running iphone6 and ipad2 with latest versions of iOS on them.

Please help as i rely heavily on having my bookmarks synced across all devices. Not sure why it worked perfectly until recently.