Which invoice has a name on it? You would have to go to an electronics store and buy something there and then get an invoice with your name because of the warranty, but if you just go to the supermarket and buy a cake or something like that, you don't get an invoice with your name on it
Are they also listed under middle names in your passport ? The consular officer has no idea about foreign names or middle names; he just looks at your passport and wants you to enter it on the e-visa form exactly as it appears in your passport.
Since you submit them online on the e-visa platform, they can of course also be in digital form. If you are applying in your home country, they can be in your national language, but if you are applying outside your home country, they must be in English or the local language. I just wanted to mention that.
We can't say what the real numbers are because not everyone is registered on the Facebook group, but here there were just a few rare cases. From what I've read.
Take your time and don’t rush. Work through each input field and become an expert. If you have questions about an input field, use the search function; we've discussed everything a hundred times.