Summary
-Ethernet cable got damaged
-Replaced it
-Reset router settings
-Set Apex to DHCP
-Both link lights are on, green is blinking
-Tried the same ethernet cable with another device [Aruba RAP] - got an IP and it pinged
Tried resetting router and Apex multiple times. Only thing I changed on the Apex is the port to 8080; all other settings are correct [subnet mask, gateway, etc.]
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