Clearing the image gallery on the Panasonic Image App

Hi everyone...does anyone use the Panasonic Image App? I can transfer images from the camera via WiFi and these are then uploaded to Google Photos (my preferred storage device). Have noticed, however, that all the images I transfer are retained within the App. Is there a way of deleting those that I no longer wish to hold?
Have tried Panasonic, but had no response.
Cheers
Jeff
Have tried Panasonic, but had no response.
Cheers
Jeff