Error related to icon size at app submission

We are trying to submit our first application in the Seller’s lounge but seeing the following error:

“Upload 400 x 400 pixels and greater icons only”

This feels contradictory to the appinfo.json instructions for icon to be 80x80 pixels in PNG format. Not sure how to get around this.

80x80 icon file is for app testing, and 400x400 icon file is for LG Content Store. However, both files are required for app submission. (See App Resources and appinfo.json.) Thank you.