Inside mechanical doorbell no longer working with Gen 1 Ring Doorbell

My gen 1 Ring doorbell used to ring our indoor chime. At some point it stopped working and I believe it was after an update. The indoor chime is on the list of compatible chimes, is hardwired, works when shorting the wires or using a regular doorbell, but will not ring when the Ring doorbell button is pressed. There is no option in the app to turn it on like later models and I have already tried a hard reset of the Ring doorbell. The reset fixed an issue with notifications that had also stopped working, (notifications for doorbell pushes weren't being sent to our phones), but did not fix the indoor chime issue. How can I fix this issue?