First time user - picture entity card issue

I have been creating my first floorplan in HA using the legacy method of a picture entity card, not HA Floorplan, due to installation issues.

In web browsers and the HA android app, my initial interactive buttons and overlays are working. I have only just started so have just added positional light button overlays and a Ground/First floor toggle.

I viewed this in Ariela, having purchased it based on some good reviews, but have found that the floorplan picture entity card is simply the base default picture and there are no interactive overlays at all. What can I have done wrong?

Images from Ariela and Home Assistant are below.