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 would go with a 2TB with the current prices. The 4TB will only get cheaper in the future and that 2TB will last you a while till prices come down. I was in the same situation when I bought my son his PS5. We went with a 1TB SN850X. At the time it was roughly $180 and it lasted him a year before being filled up. A year later and I upgraded to the 2TB version for $150. So start with the 2TB and down the road you can always upgrade.