Go to mymsteam and press mymsteam and login and upload your pictures Good luck you can't do it from your mobile app 😉

Try reducing file size

If i try to attach pic thru app on my phone it will not let me but i can use my phone's browser to connect to the website and it will let me attach pics.

Having the same problem let me know if you find out I can take a picture on the site and post it but can't upload from my picture and I'm on a smart phone not to smart lol

I have that problem often.
I think there are filters they put on to block certain content. Not sure that's my opinion. That's why I don't post anything here anymore.

I don't appreciate being censored for innocent things.

Unless stuff comes across my email that I want to comment on.