ribo
Hi,
The problem doesn't come from the override of of article in this template, I dig deeper on this and realize that the syntax of sigplus should display in fulltext of article content. So I put a readmore button for article and it's showing fine now: http://prntscr.com/o1neiv
If you use this module in other articles, you can apply the same.
I also renamed the file in template again.
Kindly check.