Installed external module don't appear in available apps/modules tab

I have installed the external module: TakePOS Connector 17 using the Install GUI of the dolibarr 17.0.1. The installator shows success installation but when I go to the available apps/modules to activate it, the new external module doesn’t appear.
I have reviewed the conf.php file to enable the custom diretory and it is enabled. I don’t find the problem.

I attach a screenshots of the custom directory and the takeposconnector directory installed by dolibarr installator and also of the conf.php file

Thanks in advance for your help.

Regards,
Leonardo M.