The app has crashed and I have lost all the dials and cant restart it.

Hello

Can you send me screenshot of your current screen?

Yes. I tryed to see in settings but no result 

Press F12 and make screenshot

I send you. This is all I see when I open my Chrome browser with FDV Speed Dial

if you press F12 you should see such panel and switch to Console tab
http://nimb.ws/4VWFZf

Install EverSync
https://chrome.google.com/webstore/detail/eversync-sync-bookmarks-b/iohcojnlgnfbmjfjfkbhahhmppcggdog

you will be able to sync you dials and bookmarks and restore even if you reinstall your OS. try to install it, see if it will show any dials locally like here
http://nimb.ws/64gD2f

if you still have them you can Upload them and reinstall Speed Dial. Than download them back.