The good news is that it's working now. I went through the steps provided by you Dave and checked the microphone settings again. Made sure that Enhancements and the Exclusive Mode were disabled. I skipped the USB Headset tips since my headset has the 3.5mm jack.
I went into the Device Manager and checked under Sound, video and game controllers and I noticed that I apparently have three separate drivers installed there.
Intel Display Audio
NVIDIA Virtual Audio Device
Realtek Audio
I deactivated the first two devices and left only Realtek Audio enabled, since the Speech Recognition Information screen was showing Microphone (Realtek Audio) as the Active Default Input Device.
I restarted the computer, launched PTA and the Grammar Helper, opened the Volume Mixer and saw that Pilot2ATC 2016 v.2.3.1.2 MFD was active. I started Grammar Helper and the Volume Mixer switched to P2A Grammar Helper. I tried practicing but it would not work, I realized that the speakers were not working.
I went back into the Device Manager and enabled the Intel Display Audio and NVIDIA Virtual Audio Device. Restarted P2A and tried it again and suddenly it was working. I'm not using my headset though, I'm using the build-in microphone, which I don't mind, I'm just glad that it is working now. I practiced a few phrases and the Grammar Helper picked them all up and the Replay function is working as well.
So what I pretty much did was disabling the additional sound drivers and leaving only Realtek enabled, restarting the computer, launching P2A and the Grammar Helper and then enabling the other two drivers again. I'm not entirely sure if this is a general remedy that can be used but it worked in my case.
Dave, I appreciate your help immensely. Now I can use the software to the fullest extent.
- Tom