Some users cannot see their invoices

[Carlos Mir]

I have this problem on my prestashop 1.6.1.5

 

Some users can not access their last invoice

 

example:

 

yes: client/invoice_pdf.php?id=2017007327&secure_key=da559ad0c2d0031e4194eb56a69bcda5

no:  client/invoice_pdf.php?id=2017013857&secure_key=da559ad0c2d0031e4194eb56a69bcda5

 

I have seen the ps_orders table and is the secure_key.

 

The client that ca not see the page see a scren with this text:

 

You are not authorized to view this page

 

any idea?