Why can't I download purchased music from iTunes?

Why can't I download purchased music from iTunes?

Added (1). So after having my iPhone fixed, all my music and photographs were wiped. I have successfully managed to redownload all my photographs from the cloud without a problem. However, when I go onto the iTunes store, go to 'purchased' and press the download button next to any of my purchased songs, it 'downloads' for a second before a popup message appears saying 'Unable to download at this time'.

I have checked both my iCloud and iTunes account settings, and nothing appears to be out of place.

Phones with group messaging like iPhone?

I don't want an iPhone, my recent one just broke and I'm ready to try a different phone. Are there any phones that have group messaging similar to iPhone, where it is all kept in the same thread?

Added (1). I would like it built in, so I don't have to download another app.

Is this English expression correct?

Specification
Weight_14g
Size_3.5cm x 2.5cm x 1.1cm
Display_Graphics and figures on a smartphone screen
Battery_2 CR2032 Li Battery
Available Phone_Android and iPhone
Connection Type_Earphone Jack Connector

it's specifications of a certain product(smartphone alcohol tester)
I want to ask if this part is correct or not?

''Connection Type_Earphone Jack Connector''

Should it be 'Connect Type' or 'Connection Type'?
and should it be 'Earphone Jack Connection' or 'Earphone Jack Connect' or something else?

Can I sync my iPhone 6 to my old computer without losing everything?

Today, I got on my old desktop computer to see what pictures and music I had on there. I have a laptop, and on that laptop, I have different music in my iTunes library. I was feeling nostalgic after looking through my old desktop, and now I'm wanting to sync my new iPhone 6 to my old computer to get my old music on my phone. I've read that you can lose your pictures, apps, and app data that way. The bad thing is, my laptop with all of my newer music and photos backed up on it is completely broken and I have no way of using it at the moment. I mainly just want all of my old music from my other computer on my phone, but I'd rather not lose all of my photos, apps, and phone data. Is there any way I can go about doing this?

FBI virus didn't lock my iPhone or safari?

So recently the FBI virus turned up on my iPhone, but didn't lock safari or the phone, does this mean anything? Am I safe? I mean I restored it three times after, and went into my safari in my settings and clicked "clear history and web data"?!