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.
Just tried it on my desktop and on my Surface Pro 3 - searching for names with hypens, by name (i.e. searching for "word-potato.txt" by typing in "potato") and searching by hyphen (i.e. searching for "word-potato.txt" by typing in "-") worked fine on both machines. I did have to qualify the search with wildcards (*potato* and *-*). I don't remember how it worked in 7... haven't used that OS in years.