Settings are not saved.

Hi,

This is the simples option, not always help but we encourage to try. 

- Copy and paste in address bar about:support  
- Select following http://nimb.ws/Vm5pjy 
- Rename this folder to any name and restart Firefox http://nimb.ws/awxfuW BUT don't delete it. Just rename. 

If it won't help, let us know.

Same problem. Replies 1 advice makes no difference

We got many error reports, rolled back to the previous version. Just reinstall the extension.
https://addons.mozilla.org/en-US/firefox/addon/fvd-speed-dial/

Once we finish fixing major problems, we will launch a new update. Most likely you will have the same problem again.
You will need to do following:
Option #2 or #3
https://everhelper.me/help1.php

Unfortunately, you can't keep older version for a long because new FF57+ will automatically disable it. There is nothing we can do, that's how Firefox team implemented. 
We try to fix everything that is possible.

Highly recommend using EverSync to backup your dails.
https://addons.mozilla.org/en-US/firefox/addon/fvd-synchronizer

Thank you.