Applink Icon change

When I send the app’s link address to SNS (Social Network Service), I make the app’s icon appear as the icon below. How do I do it?

So you want to change the image that appears with the link to be the image with the purple background?

Yes, I would like to change to the purple background and icon below.

In your settings under app info:

Apart from what Jen suggestedabove, the purple background matches with your app theme I believe, so be aware of that change.

I solved it. We sincerely thank those who helped. To tell you how to fix it, you can delete the data cache of your PC or mobile, turn off the power, and send the App Link address again.