Adding pc's to my ultimate account that don't have e-mail

I have 2 pc's that I want to add to my Ultimate account but i don't use e-mail on either one. I went to each device and logged in to my AVG account and downloaded software. One is "somewhat" working, the other is just shwing "cancelling" mesages

Hello Dan,
We understand how something like this can really try your patience.
To add pc's in Zen network email id is a must. Please create an email id to make it activated in your pc. To add a device to your Zen Network:

- Open the AVG Zen app.
- Click the + button next to the device icons on the main AVG Zen screen.
- Choose the type of device (PC or Android) to send the invitation to, and then click Continue.
- Fill in the recipient’s email address, and then click Continue again.

Hello Dan,
We understand how something like this can really try your patience.
To add pc's in Zen network email id is a must. Please create an email id to make it activated in your pc. To add a device to your Zen Network:

- Open the AVG Zen app.
- Click the + button next to the device icons on the main AVG Zen screen.
- Choose the type of device (PC or Android) to send the invitation to, and then click Continue.
- Fill in the recipient’s email address, and then click Continue again.