People can hear me when I use the app, but not when answering through Echo Dot

When I first got my Video Doorbell 2020 edition, I connected it through Alexa so I can answer it with my Echo Dot. Everything worked okay for a couple of months, but now when someone rings the doorbell and I answer using Alexa on my Echo Dot, I can hear them but they cannot hear me. I tried using the Ring app on my phone, and that way I am able to both hear and be heard. I also went into the Alexa app on my phone, and noticed that microphone permissions were disabled. However, enabling them has not fixed the problem. I have also verified that I am able to make phone calls using my Echo Dot, and the person I'm calling can hear me this way. I'm out of ideas, so I'm hoping to get some help fixing this problem.