Samsung Galaxy S9+ OEM Unlock issue

I’ve had this Galaxy S9+ since it came out and am looking to root the phone. Ive looked and found a guide saying I need to enable developer mod and enable an “OEM Unlock” option, after waiting 7 days. It’s been way more than 7 days and I still don’t see this option. I’ll also add that I have a note 9, that I’m trying to do the same thing with and don’t see this option on this device either.

Reason is I want to try out IodeOS, but can’t as when I try it fails as my bootloader is still locked. Should I ask this on xda forums instead?