After I select text and run a keyboard shortcut, a “Selected text is different” warning pops up and/or the text is not being transferred to CotranslatorAI.

In CotranslatorAI, go to the General tab in the Options window (Tools > Options) and make sure the value for “Clipboard copy timeout when using keyboard shortcuts (milliseconds):” is at least 1,250. If you’re using an older computer, consider increasing the value to 2,000.