Hey @useryhqulsJi5T, I hope you're doing well.
Are you referring to the Galaxy Note 10/10+ One UI 2.0 beta? It isn't available yet so I am unsure how you'd have that problem already.
If perhaps you are talking about the Galaxy S10/10+ One UI 2.0 beta, there is a thread for it in the Galaxy S10 section. In the thread, troubleshooting steps are listed to resolve that issue. That thread can be viewed here: https://us.community.samsung.com/t5/Galaxy-S10/One-UI-2-0-Android-10-Mega-Thread/td-p/880136
Check out the Troubleshooting portion. I hope this helps! Take care!
If you flash the unlocked XAA firmware, you should be able to participate. I have flashed carrier phones in the past to the unlocked firmware and was able to register for the beta after doing that.(verizon s9+ to unlocked and verizon note 9 to unlocked)