Guild Wars 2

I got TWO of those just this morning. I was scared at first, then confused since the letter didn’t apply to me at all. Then I noticed that the message came from another player and immediately knew it was a scam and reported them.

It seems that ever since I downloaded and started playing Guild Wars 2 my laptop’s hard drive’s GB fluctuates from one number to another. For an example, sometimes the number says 90 GB, then goes to 84.6 GB. Then the number goes up to 94 GB, then to 80.6 GB. Is this normal? Or could there be something wrong with my computer not related to the game? I check the GB storage every so often so I don’t use too much and it used to be pretty steady. Now it’s not.