I have my own Confluence which I use for my personal projects. I used a particular email address to create the Cloud account for this instance.
When my work brought up their Confluence, they sent me an invite (using the same email I used for my own). The email recognizes that I already have a Cloud account, but it will not let me login to the company instance of Confluence. I can continue to login to my personal Confluence just fine.
Both are Cloud instances.
Can anyone give me some guidance?