Linksys WRT 1900AC V2 DNS error

i recently installed openwrt on my linksys but i can't set it up to browse.
I want to use it under VPN, but before that I should be able to get it online. Despite having the ethernet cable attached, the device cannot access the internet...

Is the DHCP client correct as wan protocol?
If yes, there is nothing in RX bytes, so is there any issue with the upstream device?