It's possible to have only the published date?

Sorry, but why do you want to show the publishing date? Basically its the same as created date!
You can change the created date at the article manager.

Anyway, you can create an override for the article and blog layout.
Create a folder at the layouts folder: >> your template/layouts/com_content
And copy the attached unzipped files into this folder, looks like this:

layouts/com_content / article / php files
layouts/com_content / category / php files
layouts/com_content / featured / php files

Thank you, you are right - Basically the same but not exactly the same.

As you can see now I have a 4th date on the HP.

By editing the article I have 3 different dates:



but on the HP I see an fourth date: 01. Januar 1970



Have I to do other things?
thx

Ok, I see.
And I see that youre a german.
Bitte lassen sie uns per Mail über dieses Problem kommunzieren, ggf per Telefon.
Und geben sie uns bitte, sofern möglich einen Admin Zugang zu ihrem Joomla System.
Unsere Mail = support@joomlaplates.de

Ich habe zwei eMails gesendet welche zurück gekommen sind mit der Fehlermeldung:


Action: failed
Final-Recipient: rfc822; support@joomlaplates.de
Status: 5.7.1
Diagnostic-Code: smtp; 554 5.7.1 <support@joomlaplates.de>: Relay access denied
Last-Attempt-Date: Thu, 15 Jan 2015 17:57:03 +0000

Reporting-MTA: dns; zhhdzmsp-mail12
Arrival-Date: Thu, 15 Jan 2015 17:57:03 +0000

Action: failed
Final-Recipient: rfc822; support@joomlaplates.de
Status: 5.7.1
Diagnostic-Code: smtp; 554 5.7.1 <support@joomlaplates.de>: Relay access denied
Last-Attempt-Date: Thu, 15 Jan 2015 17:57:03 +0000

Sorry, dann benutzen sie bitte:
support@joomlaplates.com