Requesting Indexing Images In Search Console Problem

Hi Barb, I'm trying to request indexing for some newer images that aren't currently indexed.
I was able to request indexing for some images, but I'm getting an odd error for other images saying "URL not in property", even though I know that they are on my domain (in the same exact folder as the previous images that were accepted for indexing).
This url for example - https://activedynamics.ca/imgs-main/add-on-button.png
Any ideas why that might be?

Submit the page that the images live on for indexing first and then try the images. Are you asking for the http index or the https. Be sure it is the same as what you are asking for, with the images. I see that it is the https in your screenshot. I always have better luck with indexing the naked domain. IE activedynamics.com vs https://www……

Thanks. It was the https. I'll give those suggestions a try.