Problem : TLD localization tool ?

HI,

I don't know how to use the TLD Localization tool 
I could create the xml file from the properties correctly, but did not manage to upload it to test my changes (got ERROR03 Wrong user email or password)I have used my TLD user email and password, as well as the localisation and content reference you gave. I am missing something ?

Please help.

I did not find the right solution from the internet.

References:
thelastdoor.com/.../viewtopic.php
Logistics Service Video

Thanks!