C1 PRO 3.5.2 update imposible to find

I am having a P45 and I want to update my software C1 PRO 3.5.2 for MAC and Windows XP (french version)
Impossible to find any email adress on phaseone website, or any link to update C1 PRO

I am trying to update directly from the software but it does not work too

thank you for helping