Contacts are not shown anymore

Hi to all,

Something wrong happened with my Sitecore 9 setup so i can't see my latest contacts.There are no contacts in "Experience profile" visible-  just the old ones.

I registered a new user on the site and looks like it is in xDB Contacts table, but i can't see it in "Experience profile". Did i get this right that it should be created automatically when the users regsiter ? 

I see also that contacts disappeared from Contact Lists i had before. Accordingly my automated campaigns stopped to add contacts to these contact lists.

Does anyone understand what's happening and what should i fix/rebuild to make it working again ? 


Best Regards,

Yevhen Vasylyev