New SmartThings user/can't delete a photo

Hello, I just got a 43" Frame TV, model QN43LS03BAFXZA. I downloaded the SmartThing app, version 17.05.21.

I uploaded a random photo from my iPhone to “My Album” in SmartThings, just to test out the process. It seems to have synced over to something called Gallery in the SmartThings app.The Gallery shows it can only have 50 photos (and says I’m using 1/50), so I’d like to delete my “test” photo but there seems to be no way to do that. I selected the photo with the checkbox, the only option is “Next” to crop/format to add to The Frame. I’ve included a screen shot showing the UI, it shows my photo is 1/50 but no obvious way to delete that photo. All the other posts/articles about how to delete a photo reference an older version of the SmartThings app therefore the instructions are not applicable (e.g. it mentions My Collection rather than My Album). Thank you.

I have not tried to delete a photo from the gallery but I know if you upload that photo to the Frame you will be able to delete it there. And a slight correction: I think you can upload 50 photos at once, thus the 1/50. And I have the same version of the app as you.

FWIW I just spoke to SmartThings and they said there is a known issue of uploading photos to the Frame from Apple. However I can do it with my iPhone 12Pro but it’s a bad experience as I can only upload individual photos from my entire gallery of 21,000 photos. I.e. I cannot upload an album–which is the only way I would really want to upload a bunch of images at once. There was no known timing for the fix.