Nextgen Gallery and Albums disappeared after installation of new theme

Hi, i just contracted the service to install the new HB Themes (The Main one) and while the theme looks great (congratulations), I see that all the Nextgen Galleries, Albums and Images do not show now when I access Nextgen. However, when I go into the Nextgen folder through file manager I can see that all the gallery folders with their images are actually there under wp-content/gallery…where they are supposed to be…and I´ve checked the Nextgen setup which is correctly pointing to that folder…

Please advise if I need to regenerate or something after you have installed the theme. Thank u.