Signed up earlier today for the One UI Beta and so far I haven't seen any sign of being able to download the beta. Been trying periodically all afternoon and evening including making sure all apps are fully up to date. I even disabled Programmer Mode on the off chance it might cause me not to get the beta and rebooted my phone.
One other thing I noticed in the One UI Beta signup, it said to post any registration problems or questions in the "Beta Registration Issues" thread. I potted two different ones, but none marked as "Official" or that have been Posted by a Samsung Admin or other official.
I have the Note 20 Ultra 5G Unlocked (SM-N986U1) on Straight Talk.
Carrier Firmware is (TFN/TFN/XAA)
Because of how late (or lack there of) the firmware is usually released, I usually keep an eye out each month for the XAA firmware and download it through SamMobile.com and flash it with Odin 3 v3.14.4
I'd really like to get in on the Beta program with my phone.