Hey everyone, just informing that my WU transfer went through successfully.
I sent money from my account abroad to someone else's account here in Argentina through Western Union using their Android app.
I chose "Faster Payments" and went ahead and sent the money to WU's account. By the way, in "reference" field they ask you to write "exactly" the characters they provide, but most of the time they don't fit. So just FYI if in "reference" field you put instead "EB0000000+only the person's last name(even incomplete if it doesn't fit)+AR" it will works. I was confused and thought it would be an issue if it wasn't exactly as they asked but it still works.
Around 1,2,3 hrs later WU will confirm your money arrived to them. And at some point, they will let you know that the money arrived to the other person's bank account. In my case having sent it on 12/04 they told me it would reach Argentina on 24/04 or 6 working days, but instead it arrived on 13/04 (the following day).
Best of luck for everyone with your transfers.