New async js tracking code should be inserted in <head>...</head> area.Quote
Fabian Becker
Works perfectly fine for me and many other people.
But howto describes inserting it before </body> tag:
[piwik.org]
Same in Piwik- administration settings:

<head> oder <body> ?
(Alternative img tracking code (for usage without js) will be inserted before </body>.)
Thx...