Installing AVG on Windows 10

Just bought AVG for our two computers.  The newest laptop does not have a cd drive, which we did not know about until after the purchase.  So how can I down load my cd without a cd drive?  That was question number one.  The laptop has windows 8, the other computer has windows 10 and it does have a cd drive, but won't let me down load to windows 10.  Help…we have a cd that is presently no good to us.  The store won't take it back, because it has been opened.

Susie, What AVG products have you actually purchased for your 2 computers from the store?.
AVG Guru

Susie, What AVG products have you actually purchased for your 2 computers from the store?.
AVG Guru