I made some more tests and it seems that it is only compatible with joomla 3.8.6
All joomla 3.6.5 can't work with it.
Can you make it compatible? I'm sure i'm not the only one with that version of joomla.
I understand about the upgrade of Joomla, but i'm afraid that the templates installed are not compatible with joomla 3.8 and broke the site.
I have to create some kind of test server to make this tests before doing in the live site, but now with this new Privacy rules i will have to postpone those update.
Thanks for your help.