Hi there! I'm a newbie on here, too!I struggled on my first few posts asking about authentication so I've learned how to upload pictures well haha. If you're using an app on the iPhone, you can upload pictures by tapping on the message you're wanting to "quote" or respond to and choosing the center option ie the option that isn't the camera icon or the [\] icon. You will be asked to allow TPF access to your photos and then, assuming you say yes, voila! You can upload pictures! It only allows so many at a time, though. If you go through safari or whatever browser you're using on your phone, you still quote to respond, but you have to choose "upload file". I think there were issues with how my pictures uploaded from my phone, too. I recommend using the app.
Thank you for your response! So sorry I just saw this! Didn't see the notifications!