Hello Bruno,
I have checked the file and the mod is installed correctly in the right place. However, I regret that I am unable to test it due to the other mods you have installed there. One is AEVA Gallery I believe.
As I mentioned earlier in this topic, it would be impossible for me to check and test compatibility with every other mod available.
There are really only two things you can do.
1. Remove other mods that are installed in the subs.php file to see which one is affecting this mod, it may be one of more are causing the conflict and I regret I am unable to troubleshoot conflicts with other mods. If you discover which one is stopping this mod from operating, let me know and I'll see if I can produce a workaround.
2. Remove my mod and try one of the others mentioned by Arantor above.