I’m not sure what to tell you then. Because I just tried uploading a screenshot and received the error msg stating it was too largeWell, it's not. 10mb is the attachment file size limit for images. That's huge even for all of today's professional HD digital cameras. I could make that a bunch bigger, up to 130mb which is the server upload limit. But I'm not.
We were on the whole twitter thing. Please experiment viewing twitter embeds in threads, using different browsers.
Then I took that exact same screen shot and cropped it, then tried to upload the same image that was cropped and it worked as you can see in the above attachment.
I’ll test the twitter posts on the other browser and see if that works
By the way, I re-downloaded twitter on my phone and logged (for the first time since 2013) just to see if the tweets would load in the twitter app when I clicked on them and that did not work