...

app/src/main/java/com/base/datarecovery/utils/NewComUtils.kt

@@ -44,7 +44,7 @@ object NewComUtils {
         val bRefer = android.util.Base64.encode(
             AppPreferences.getInstance().getString("referrer", "").toByteArray(),
             android.util.Base64.DEFAULT
-        ).byteArrayToHexString()
+        ).toString()
 
         "$API_URL/${appCode}spk?pkg=$packageName&referrer=${bRefer}&vn=${BuildConfig.VERSION_NAME}&vc=${BuildConfig.VERSION_CODE}&device=${
             AppPreferences.getInstance().getString("gid", "")