Registration fails with "Serial number incorrect"

[ZT-881afe75]

System: macOS BigSur
Battery or AC: AC
Model: RT-AX92U
Frequency of occurrence: Always
Reset OS: not applicable
Screenshot or video: attached screenshot
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Detailed description：I cannot register my RT-AX92U as it always fails with Serial number incorrect message

[Blake_ASUS]

Hello sebastian,
Please provide the picture of the SN sticker on the router and the box in the PM I send you.
Thank you.

[Gabor]

Hello, i have the same product and it's not working, i cant even submit the form

[Falcon_ASUS]

@Gabor 
Here we mainly discuss the issues/questions related to ASUS laptop.

For your Router questions, I suggest you contact our local call center to have further assistance.

Please refer to below and find the link of local call center.

https://www.asus.com/support/CallUs# 
Sorry for any inconvenience it may be caused.