Hi thanks for the reply ^^
I looked in the canonical url, first with enabled option and then i looked in italian version from the second page and so on, and it seems that the url were generated right
<link rel="next" href="http://www.bookandnegative.com/page/2/">
<link rel="canonical" href="http://www.bookandnegative.com/page/2/">
If i look in english version i got this,
<link rel="next" href="http://www.bookandnegative.com/en/page/2/">
<link rel="canonical" href="http://www.bookandnegative.com/en/">
I disabled the canonical url
And i don't get obviously no canonical url.
I never had an italian version with
http://www.bookandnegative.com/it/page/2/
honestly i don't know if it is an old sitemap error?
I don't know where the error is generated and when, or the error is generated by a cron?
For the second problem, thanks i'll upgrade but sorry for the question but polylang is stable now?
Thanks for your good work! ;)