I have the Asus PG27AQDM and the problem that I can not register it. I have entered the number correctly, but it does not accept it. What can I do?

I have the "Asus X670e E Gaming Wifi" with "Corsair Vengeance RGB 32GB, DDR5-6000 RAM" and when set the EXPO Profil the CPU SOC get to 1.38, without EXPO with 4800 i see only 1.048. For me the 1.38 are much to high. I get also a reboot when set to EX...

When set my DDR5-6000 with EXPO the CPU SOC is 1.38. Is this normal on Ryzen 7000? On Ryzen 5000 it was much lower.

I will register my Motherboard on Asus but get always wrong Serial number. I took the serial number which was on the box. I don't know what I'm doing wrong or why this won't work.

I get today the "ASUS ROG Strix X670E-E Gaming WIFI" and i will use the last Bios. It's better when use flashback or normal for bios update?