LTE5398-M904 - Can't configure VLAN

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LoSpo
LoSpo Posts: 1
edited April 5 in Home Router

I need to connect the router to my outdoor unit (outdoor antenna from ZTE), and i need to configure VLAN 83 (standard IEEE 802.1q) but when i try i have this error.

Do you know where i am wrong?

Thank you

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