When in English we have a phrase like:

"Download now FREE!"

In Spanish the correct translation must be:

"¡Descárgalo ahora GRATIS!"

But now when you write in the translation input box, the symbol "¡" dissapears after clicking out of the box. So it's a BUG like the one that couldn't write the "++" symbol. It also happens with interrogative symbol "¿"

I hope you can fix this. Thank you!

It seems fixed now: "¿" and "¡" are converted to ¿ and ¡.