Help! Contacts disappeared after eM Client upgrade

I was asked if I wanted to install latest upgrade and then try out Pro for 30 days … now my contacts lists have all disappeared. I can find individuals if I start to type their names but the long lists of contacts and distribution groups have gone. How can I reload please? Urgently needed.
Thanks

Do you have this setting checked?

Thanks, yes, I have this checked. Still no joy though :worried: