You can download all your dials and bookmard from server if you used EverSync and uploaded them.
If you have lost all your dials (card) on server (check everhelper.me dashboard (https://everhelper.me/client/)), you can try to do this in Settings:
If this doesn't help, please, leave us you account and the date when this happened. We will try to restore your backup.
Service d'assistance aux clients par UserEcho