Firefox Deleting Bookmarks
I have been using Firefox Sync for a while between my desktop and laptop. Both repeatedly remove the same bookmark folder from my bookmarks toolbar containing links to my home network NAS services. A single folder containing 5 bookmarks. Even when the laptop is off the folder on my desktop disappears, starting the laptop without networking (no way to sync) the folder will also be missing. Is there an audit trail of what is removing or modifying bookmarks? These are the only 2 devices using Sync. This same folder existed normally on both computers prior to enabling sync. I recreate it and it disappears within a day.
Opaite Mbohovái (1)
If you have sync, and there is a problem anywhere, Shut Down Sync Immediately On All Devices to prevent the problem from spreading. Once the problem is fixed, perform the same repair on all computers/profiles before using sync again.
[v57+] Places Maintenance is built into Firefox.
Type about:support<enter> in the address bar.
You will find Places Database near the bottom. Press the Verify Integrity button.
When done, copy and post the results here.
https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional