I cannot find the extension for the FVD Speed Dial on my Firefox Browser.

Does if exist on Firefox and if so, how can I find that extension to add it to the Firefox Browser

For a couple of weeks now, I have noticed a strange behavior in FVD Synchronizer, both in EDGE and Chrome.
It always tells me that my bookmarks are not up to date, and that "Before starting synchronization you must select one of the following actions: Merge, Upload or Download".
The installed version is 2.0.8 and I get the same thing on different computers. Both Chrome and EDGE are updated to the latest version.
Despite this message, with Chrome (which is my default browser) I can sync bookmarks with no problems.
However with EDGE, I usually CANNOT, it duplicates my bookmarks in the cloud and locally it leaves me less than half. I have to retrieve a copy from Firefox to the cloud, and download them to local in EDGE (having previously deleted them all). I get an error but it downloads them all.
With Firefox I don't have any problem and I don't get that warning message. In this case the version is 18.5.7.

I have bought Lifetime Premium but I can not make Complete Backup. It show a message saying I need Premium. But I bought premium. What is wrong?

ErreursTout effacerUncaught (in promise)

Erreur : Impossible d'établir la connexion. La fin de réception n'existe pas.Contexteoptions.html#speeddialTrace de la pile

• options.html#speeddial:0 (fonction anonyme)

Aucune notification

I am seeing the following response from EverHelper/EverSync since yesterday

"Our site is currently Under Maintenance!We should be back shortly.Thank you for your patience."

Would you please send us out an update on this maintenance such as how long you expect the outage to last.

The bookmarks dropdown list in Firefox is showing in dark mode, which makes it hard for me to read and it can also trigger a migraine (not fun).  Is this something that I can change using the config option or is it a programming task for Mozilla's development group?

Also - I have to use the search bar at the top of the screen next to the address bar or else click my dial for google search because the main search bar on the speed dial page ignores that Google is my preferred search engine.  I have disabled ALL the other search engines in the list.  It's particularly disturbing when it brings up a Russian or Chinese search engine.  There's been tons of requests to fix this. 

10/10/2022, All speed dials disappeared with browser update & I can no longer access my restores.
3 years of dials gone & no access to my restores unless I pay.. 
It's about time someone wrote an alternative to FVD speed dial, seem like predatory marketing has taken hold.