Insecure app notifications - How to make my app secure?

Hello,
I own an application (ios/android) which triggers a notification “Shakabay is insecure” (Shakabay peut être risqué) when Avast Mobile Security is installed.

Where can I check security tests for my application? It’s a simple webview displaying a website

Information for developers,
https://support.avast.com/article/228/
https://support.avast.com/article/229/

Hi, we have not been able to reproduce the issue. Could you please send us a screenshot of the notification? It might help a lot, thanks.