Thank you for the update on this. This may not be the root cause as WPML is tested with our Plugins to ensure full compatibility as well as i'm unable to replicate the issue on a fresh installation.
Coupled with the fact that on your site simply changing the theme the issue doesn't occur. This is a good indication of the issue being specific to your install. Has the theme author been able to resolve the issue with the update as yet?
The PDF generation now works successfully after altering the Toolset Access settings as described, however it is not working in German, only in English. I have contacted the plugin author and they have access to our site to see why it works to generate the PDF in both languages, but in German the PDF is still showing in English.
So I guess this ticket with Toolset could be closed, because this related to the Toolset Access issue and PDF generation.
Yes you can go ahead and close here given that with the modified setting in access it now works. I found it a bit odd that it worked after switching the theme hence which lead me to believe that the issue was theme related.
However i'm happy to see that the issue is now resolved. Hopefully the plugin author can shed some light on why the PDF isn't generating in the selected language.