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@Suvidit-Academy Thank you for your response. They did remove the test site and while they still show up in Google, the pages lead to a dead url which hopefully Google doesn't like at some point and removes them.
I did not think of having them add a search console account for the subdomain. That's a great idea to have them submit a removal request.
Our pages have finally surpassed theirs but the indexing of our site is slow and only 2 pages rank higher than theirs.

Patience is key I guess

@Spaziohouston
I can provide screenshots of webmaster tools if needed. Hopefully someone has had or seen this problem before. Really just trying to ensure we are ranking at the top for our own brand name.

Our company recently rebranded and launched a new website. The website was developed by an overseas team and they created the test site on their subdomain. The only problem is that Google crawled and indexed their site and ours. I noticed Google indexed their sub domain ahead of our domain and based on Search Console it has deemed our content as the duplicate of theirs and the Google selected theirs as the canonical.
The website in question is https://www.spaziointerni.us
What would be the best course of action to get our content ranked and selected instead of being marked as the duplicate?
Not sure if I have to modify the content to make it more unique or have them submit a removal in their search console.
Our indexed pages continue to go down due to this issue.
Any help is greatly appreciated.

Our company recently rebranded and launched a new website. The website was developed by an overseas team and they created the test site on their subdomain. The only problem is that Google crawled and indexed their site and ours. I noticed Google indexed their sub domain ahead of our domain and based on Search Console it has deemed our content as the duplicate of theirs and the Google selected theirs as the canonical.
The website in question is https://www.spaziointerni.us
What would be the best course of action to get our content ranked and selected instead of being marked as the duplicate?
Not sure if I have to modify the content to make it more unique or have them submit a removal in their search console.
Our indexed pages continue to go down due to this issue.
Any help is greatly appreciated.