Hello Wei Hong and Thomas Yuan,
Short instruction:
go to ftp://plugins>>comments>>comment.block.tpl
find first div:
Code:
Only registered members can view the code.
and replace to:
Code:
Only registered members can view the code.
Then you should remove Tab for comments. You should do it through database. Use phpMyAdmin or other for working with DB find table fl_hooks
find line name=listingDetailsBottom plugin=comment. Exactly this line because can be listingDetailsBottom but with other plugins. You should find fr comment.
Edit it and find code:
PHP Code:
Only registered members can view the code.
remove it and save.
And you can check it.