Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I just use a soft washcloth that is slightly damp. Works great. Stay away from most window cleaners, they can have harsh chemicals that will damage or ruin your screen.
I use a micro-fiber cloth and Endust for electronics to clean the smudges. Endust for electronics also helps in keeping a lot of dust from settling on the screen.
a cloth damp with water works best for me. i've "heard" that anything with amonia or alcohol (basically most real cleaners) will damage the screen, or anything plastic in general. you could try contacting the manufacturer also.