I followed the post you mentioned me but it didn't helped. I am facing the same problem. I tried all the options. I am not sure but i think that there is some bug, but where and how i don't know. I am not sure what to do. what do you suggest ?
Secondly, in 2nd comment of this post:
https://forum.dokuwiki.org/post/55827 you told me that
@user is not correct. The correct one is
@ user but for me this
@user is working fine. This one is corrupted
@ user. am i right ?