When you go to full editor you should have the option at the bottom to attach pic.

I'm not an IOS guy, is there some sort of app permission that has to be turned on?

Yes, you have to allow access to photos on camera. I don’t remember where that setting is but that could be the problem.

Why the heck does that one work and none of the others I’ve tried?

No idea, but her phone does the same black screen thing as yours.

Mine is a 15 and it works.

Her 16 loads that picture too. lol

I just discovered something. The new phone will Post any picture that I had taken with the old 11. But it will not post any picture that I’ve taken with it since I’ve got it. That means it must be a formatting issue.

They all say HEIF on them. I changed the camera settings from high efficiency to most compatible which should make them all JPEG’s but they all still say HEIF.

On which pictures?

I don’t know. My 15 is doing it on some pictures too now. lol

I’m working on that Tray.

Test

I've had that issue at work with some of our service techs that use iphones. The pics in heif format don't share well at all.

When I use that photo uploader from the full editor it says the pictures I'm trying to upload are over 4MB that get the black screen. Your dog's picture must be smaller than that since it works. Typically pictures that I have that were texted to me will upload since texting them seems to resize them but the newest ones won't load even then.... when you get it figured out let the rest of us know. lol

Usually if you just crop the pic a little then it will be below the 4MB limit and you can post it.

Test

Took a screen shot of an existing pic on my camera roll, seemed to work.