Why can't I send messages?? (response)

Now to send messages, you need to do a Captcha-like test, so many people fail not because the image is wrong or what they wrote is wrong, is because they don't know that all the letters that appear need to be WRITTEN LIKE THIS with big letters. Here is an example:                      This image should (in theory) be written like this: "748aG" but it is actually like this: "748AG" all letters LIKE THIS. so now you can send messages! Hope this helped.

Actually, that might not always be true; for my last message I had to type SfxnG instead of SFXNG

but it did help me before, 

oh, din't know that 

but most of the times you do have to put all letters LIKE THIS

yea

Maybe try both?