A fix for the Discord changes has been released on the beta branch of Ovrlay. You can test it out by right-clicking Ovrlay in your Library -> Properties -> Betas and pick "beta"

Ovrlay now requires a short setup where you create a Discord "App" and enter its information into the setup screen. This is very similar to how the StreamDeck-Discord project handles the same issue.

Let me know how it works either in this thread or at my email kevin@synth.software.

Thank you all for your patience!