Have to say that this problem occures many times for many years between a Handy Samsung Device (Android) and Firefox Browser on Windows. In this years I have gone through many Firefox Versions on Windows and on Android. I have gone through many Android devices, Andorid-Versions and Windows Versions. The weird thing is, that on both deviced in the preferences section it is shown up that it is uptodate, everything is synchronized, what ist not true. The funny thing it, e.g. I can change the name of my Account on both devices, and this will be synchronized immediately but the bookmarks not! Delete the account and set it up again, or setup to default on both device is not up to date. There are other browser I used on the same devices and the synchronisation worked perfectly, with no issues. This is a very important point for me, and I'm slowly losing my patience.
