1. Do you have fr-FR language installed in your Joomla?
yes (for menu , article) and virtuemart is ok
invoice ok (english and french) in virtuemart
2. Do you have files in proper folder? For invoice, it must be languages/fr-FR/fr-FR.com_vminvoice.ini
yes (and vm invoice make invoice in french and english) but only with language site default
, files is good
3. If you have enabled "Page appearance -> Use customer language
yes
Exactly as this check customer language, did not work
All my menu EN and FR , front end EN and FR
, invoice EN and FR (virtuemart) work in English, when the customer chooses his language on the flag.
but not in VM invoice nothing changes is always in French.
I find your extension very well but I would like to find a solution.
sorry for my bad english
thank s for the help