I'm not sure I'm understanding precisely. It sounds like you have two Adobe IDs (Am I right?) If so, you'll only be able to see the color themes associated with whatever login you actually log-in with.
That is, if you save a bunch of themes to Account A, you'll be able to see them when you log-in with your Account A ID but you won't be able to see themes you create in Account B when you log in with your Account A ID. Themes don't transfer between accounts.
Is that what you're asking? Let me know.
Yes thats seems to be what the issue is I believe. Is there any way I can link them to just one account? I want to be able to access them whereever I go.
No, there is no way to link the assets of two different accounts. I'm not sure whether it's something that can or will be added in the future but I'll mention it when I send feeback to the teams.