I have spell check set as English and it keeps switching to spanish. I have double checked in the Creative Cloud App as well
The language dictionary used by spell check is set in the text itself. You can do this via the Paragraph Style Options > Advanced Character Formats, or by selecting the text and assigning the language in the Character panel.
So what exactly is happening when you spell check?
You need to make sure that the text you're searching is set as
English in Language menu in the Character or Control panel (see screen capture):