@Machavity You appear to have
copy-&-pasted the text to unblacklist from the displayed text on your !!/blacklist-keyword message. The displayed text interprets the first to
*
characters as Markdown and does not display them. Thus, what you tried to unblacklist doesn't exist in the blacklist. If you wanted to copy-&-paste, then you need to use the
plain version of the message to see it without the Markdown interpretation.