Wix Mobile Apps Request: Displaying a Banner in Your Member Apps
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Currently, it is not possible to add a banner (e.g. advertising a sale or making an announcement) in your member apps (e.g., Fit by Wix or Spaces by Wix).
Tip:
As a workaround, you can add an image to your app and link it to the relevant screen or URL.
We are always working to update and improve our products and your feedback is greatly appreciated.