Step by step instructions:
Connect the electricity cable in the Power port and the network cable to the LAN port, which you can find on the backside of the device.
Press the red button continuously to start the device.
Click on the Viva.com Image logo, choose your preferred language and tap on the Continue button.
On the next page click Continue
Wait until the notification to enter the amount of payment appears
The card terminal is ready to use.
Connect your terminal to your viva.com account. You can follow the steps mentioned here