Yes, this is a normal, you actually DON'T HAVE TO OPEN the License Key File !! Activation is done inside your DAW via ANA 2 GUI, when prompted for the License Key file, you simply have to point ANA 2 to the file location on your hard drive.
Again, please head back to support, check email from Sonic Academy ( double check spam folder ) and my reply to ticket #15387 ( I'm still waiting for you to reply ).
No need to have requests all over the place, it's just makes things confusing and will delay the solution since we will have to reply to each of them, thank you.