V 0.6 doesn't seem to work (for me)

Hello. Thanks for the revival of this great app. Seems not to work for me :

• can't choose a file and send it from a Volla UT phone to a Volla Volla OS phone ;
• can't send a file from a Volla Volla OS phone to a Volla UT phone.

Also, it doesn't seem to work with a nexus 5 : can't choose and send to another UT phone. Do i miss something or it is normal that the app doesn't work currently ?

I noticed with UTTT that there isn't a config file, i don't know if the app work without or need it.