FYI, useful instructions from one of the reviews:
Please reboot the watch by pressing and holding the Crown and PB2 (Pusher Button A) at the same time until the center hand does a full revolution.
Then uninstall the app, turn off the Wi-Fi on the phone, turn off the Bluetooth on the phone, then turn off the phone.
Turn the phone on, use your carrier (T-Mobile, ATT, Verizon etc…) data and download the app.
Turn on the Bluetooth on the phone, open the Timex Connected app and choose the Metropolitan+
Hold down the Pusher A button on the watch and place the watch on Bluetooth.
On the app follow the pairing steps from the wizard and synchronize the phone and the watch.