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.
The LG UltraFine is the only USB-C 5K monitor.
The Dell UP2715k, HP Z27q, and Philips 275P4VYKEB require two DisplayPort 1.2 connections for 5120x2880@60Hz .
The Planar IX2790 and Iiyama XB2779QQS (AFAIK the same monitor with slightly different styling) support 5120x2880@60Hz over one DP 1.4...