AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.seuapp"
          <application
            android:name=".MainApplication"
            android:label="@string/app_name"
            android:icon="@mipmap/ic_launcher"
            android:roundIcon="@mipmap/ic_launcher_round"
            android:allowBackup="false"
            android:theme="@style/AppTheme"
            android:launchMode="singleTask">
              
              #Procura por esse activity, aonde ta definido tua .MainActivity
              <activity
                android:name=".MainActivity"
                android:label="@string/app_name"
                android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
                android:screenOrientation="portrait"
                android:launchMode="singleTask"
                android:windowSoftInputMode="adjustResize"
                android:exported="true">
                
                  ...other intents
                
                  # aqui voce adiciona um intent novo com o nome do bundle do teu app.
                  <intent-filter>
                    <action android:name="android.intent.action.VIEW" />
                    <category android:name="android.intent.category.DEFAULT" />
                    <category android:name="android.intent.category.BROWSABLE" />
                    <data android:scheme="com.seuapp" />
                  </intent-filter>
                
                </activity>
             </application>