A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
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I had the same issue before I fixed it changing the language of unity web page (at the bottom) to any languaje and then switch back to english, it...
I fixed it!! In my case when I oppened unity3d.com on my browser it was in spanish as well, so I went to the bottom of unity3d.com and selected...