How do you fix this issue?

Unplug the charger loop for a minute, or so, then plug it back in and ensure the speaker is seated on its charger correctly, then see if it springs back to life and reappears in the Sonos App.

If not, try toggling the rear centre thin rear button which will switch it between WiFi/Bluetooth.

When (hopefully) working on the WiFi connection and appearing in the Sonos App, perhaps make a note of its charge-level and submit a system diagnostic and post it’s reference back here. 

How long did you leave it on charge for its first charge from new? Like all rechargeable devices, they typically need a long time initially, as the batteries slowly self-discharge during storage and transit.

Unplugged the charging loop and let sit for awhile. Tried to turn it on and nothing happened. Plugged it back in using another outlet and nothing. Tried toggling between WiFi and Bluetooth and nothing.

The Move was on the charger for at least 7 days. The amber light on the front is blinking but no blue lights for power on the top.

When you press the power button on the back you should immediately get the status light on the top lit. If you get nothing when you do this, it sounds like you have a faulty unit.

No status light comes on when you press the on button.