Since our piwik got auto-updated it stopped working and tracking.
Reason for that is that all tracking-requests return #400 (Bad Request).
I tried to debug what causes this, as many other issues were opened concerning #400 in past versions, and got to the point that it breaks if rec-param is 1.
I even tested it with Image-Tracker.
<img src="http://host.xy/piwik.php?idsite=2amp;rec=1" style="border:0" alt="" />
returns #400 while
<img src="http://host.xy/piwik.php?idsite=2amp" style="border:0" alt="" />
I tested a blank installation of PIWIK 1.16.1 (using the same DB) with no success.
i appreciate any help
I recommend having a look here: http://piwik.org/faq/troubleshooting/faq_58/ and especially here: http://developer.piwik.org/api-reference/tracking-api#debugging-the-tracker Please try to enable logging for the tracker and likely you will see an error message. Please keep us updated
As indicated, debbuging the tracker will show you the problem directly. if you need more help please create a new issue.