1letter
(Jan)
1
Who is the contact person for such problems?
You'll need to use the Contact Form. 
Seriously, though, there is an open issue:
1 Like
rioksane
(Rikupekka Oksanen)
3
You can report plone.org issues to marketing@plone.org or file an issue here: Issues · plone/plone.org · GitHub
Now this form does not end in error anymore: Contact us
But if you need to contact Plone Foundation, it's best to send email to board@plone.org.
