Supreme directory – details, sidebar – E-Mail address won`t show up

Hello guys,

I have a strange problem… For some reason the email addresses in the sidebar does not show up anymore. I checked the settings of the CPT but can`t find a reason.

You can see this entry for example:
http://boz1.timmeserver.de/vz-standesaemter/standesamt-aachen-richterich/

Everything we need can be seen in the sidebar, just not the email address :/
Could you please take a look and see if you can find the reason?

In the other areas it works, for example if I want to show it in the content tabs. I also checked the CSS and it is also no display-none thing because when I check the source code from the frontpage the email is also not invisibe or something like that. It`s just totally not there.

Thanks in advance, Atilla