There is another reason why some users don't see a microphone: missing app permissions.
In this case you need to turn on microphone permissions for the app Remember Me.
iPhone (iOS) system settings
If you're having trouble getting your microphone to work in the app, it's possible that your phone's system settings have been set to block the app's usage of the microphone.
- Open your Settings app on your iPhone.
- Tap Privacy & Security.
- Tap Microphone.
- Tap the switch next to the "Remember Me" to give it permission to access the microphone.
If you need additional help, check Control access to hardware features article by Apple.
Android system settings
Your Android phone may have blocked access to the microphone. Follow the instructions below to give the app permission from the system settings.
- Open the Settings app on your phone.
- Tap Apps.
- Find and tap the app "Remember Me". If you can't find it, tap See all ### apps (where ### is the number of apps on your phone).
- Tap Permissions.
- Tap Microphone.
- Tap "Allow only while using the app" to enable the hardware for this app.
If you need additional help, check Change app permissions on your Android phone by Google.