Well, an update on this (sorry for spamming your mail box) - I spoke to Pavemen about the tags not parsing correctly - I saw that some did not convert correctly in the posts and that was a shame.
He pointed out that there is a rather large flaw in the current set up - the query currently runs for all forums and will send links of all posts to all users - private forum or not (eek).
I can make a setting where you can specify which forums to exclude - that is easily done.
What I did see, in my testing, that when I tried to make some code changes (exploring new things) and basically BREAKING it that the task did not run. It said it did, but it does not.
So that might be your issue.