How to connect your Android App with metamask?

So I am using wallet connectV2, what I am trying to do is to connect my metamask wallet with my App and I am trying to follow the walletConnect2 sample app code. But I am having trouble connecting it as there is no popup appearing when selecting metamask unlike their own wallet sample app. So, please can anybody tell me what should I do or need to change(parameter/relayServerUrl) in order to connect with metamask. I have provided a pic also.