You might try this, it worked for me.
I opened up the BBcodes by clicking on the blue link at the bottom of the message.
I highlighted and copied the IMG line.
Then I pasted it into the message.
Next
I opened the picture in a separate tab in my browser and copied the
URL.
I highlighted everything between the two IMG blocks being careful not to delete either "[" or "]".
Then I pasted the link into that area and there you have it, your picture!
I
don't know why but when I tried to type in the IMG code and paste the
URL in between it didn't work but doing what I did above did, go figure.
Computers, ya gotta love them