Mihai, I shred the link that you have on the “Edit Languages” page, which would make it impossible for me to find (or guess) what the correct URL is rather than following the one you suggest from your plugin.
On my original message I added the debug code so you could see if there is something wrong because I believe I am following the right steps, could you please help me solve this issue?
Sorry, it was not clear for me that you were referring to that URL.
Thank you for sharing it, I will investigate and report it forward.
In regards to the flag that you want to use, you will need to select the 'custom flag' radio checkbox and you will need to find an Ecuador flag image that you want to use for Spanish, then add it to your site as explained in the documentation URL that I shared.