Hi Sim,
Could you please confirm if you are using the latest version of Metro Studio (2.0.1.2). We had issues with search in our beta version but it was fixed for the final release. If you are already on the latest version then please send the log file found in this location below to support@syncfusion.com or attach it in this thread.
C:\Users\{User Name}\AppData\Roaming\Syncfusion\Metro Studio\Log\Log.txt
Thanks,
Stephen