ASUS RT-AC3100 flipping out

This morning I woke to an email from my internet provider stating that there was a brute force attack and my home IP address was unfortunately in the block of IPs they blacklisted. Worked with them to get things resolved but noticed my router has been acting strange. I decided to reset it and configure it again net new.

I have tried the typical methods of resetting it, holding the reset button for 30 seconds until power light flashes, then rebooting and connecting to the default IP but...

ASUS RT-AC3100 flipping out