Hello, everyone! I'm pleased to meet all of you!
I'm Torres and my native language is not listed (Extremaduran).
So, I have choosen "Native language: None" when I registered but now, I'd like to add the other languages I speakeI ak but it seems to be impossible: http://prntscr.com/cfuywg
[not needed anymore- removed by CK]
Extremaduran, though related to Castilian and other varieties of Spanish does appear to be a language in its own right, known among its own speakers as "Lengua estremeña".
According to Wikipedia, its ISO 639-3 code is "ext". SIL also has a short summary about it:
For Tatoeba's purposes, the linguistic region already has its own representative flag: