I’m sorry to hear that you’re dealing with this issue. Generally, if you press your push start/stop twice, you will enter accessory mode. By pressing it once, you should be able to turn your Honda Civic on and off. If your key is out of range or even low battery, it could be causing your start/stop to act strangely as well.
You could be dealing with a malfunctioning or faulty push start/stop button. In that case, you should contact your dealership and bring your car in immediately. They can assess the situation and fix the problem for you.