如何发帖加不扣米附件

发帖上传附件，下载附件的人都会扣一个米. 点链接可以发不扣米附件
https://www.1point3acres.com/bbs/forum.php?mod=attachment&aid=MjgwOTYxfDcyMTM0MmYxOGM4NjZkODdmMjZmN2QwZTZiMDNiMzAyfDE3ODU5ODkwNTM%3D&request=yes&_f=.pdf

I don't know how to add an image, please go to my personal photo album to see where is the icon for click.
Although I upload this image, I cannot add it here


补充内容 (2017-11-17 18:16):
NOOOOO! Just now, when I saved it as prompt, it worked. But now it doesn’t work. I will cool myself , I stop to public until I find the right way