Adding devices to AVG Internet Security

I have paid for AVG Internet security on one machine and have AVG Free on a second machine.  AVG provided instructions on how to add my second machine to AVG Internet Security (paid) which I followed.  I am getting this error when adding the device:  0xC0070005: The added waitable object already existed in the collection.   I can see the second device on my primary machine, but I have not been successful in loading Internet Security on my second machine.   

I have uninstalled AVG free and I am still getting the same error:   0xC0070005: The added waitable object already existed in the collection. 

thank you

Hi Carol,
Thank you for reaching out to us with your concern.
I see that you have AVG Internet Security for 1 computer only, hence you can use AVG Internet Security on 1 computer only.
You need to install AVG Anti-Virus Free on the other computer. You can also get in touch with our Chat Team at http://avgclick.me/AVGtechnical and they will help you to increase the License to 2 computers if you wish to increase it.