multiple listings for same pc

I downloaded and setup Avast while trying to get my sister’s pc working properly. I had to reset it to factory and re-download and setup Avast. After i did my account is showing her pc twice, now the one pc is taking two slot of my 3-pc account. How do I remove one of the pc profiles so I can have 3 legit pcs setup?

https://my.avast.com
Remove it from there.