How do I connect my Poliglu Instant Translator?

How do I use my Poliglu Instant Translator?

Which languages does Poliglu Instant Translator translate to or from (spoken and written word)?

Does Poliglu Instant Translator work two ways?

Do I need a smartphone to use Poliglu Instant Translator?

What to do if Poliglu app is not opening on iPhone (IOS)?