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I have a somewhat good understanding of how everything works but I can't for the life of me solve this problem :(

I'm doing everything wireless, did the quick setup, cloned the old mac address but all I get is limited connectivity. Basically no internet.

WAN is unplugged is the only problem I'm seeing but I don't know how to fix it because I'm doing everything wireless. Do I NEED to use ethernet cable provided?

Help! :(