gare:
Does this mean we could pay you to create the code allowing us to change the postng requirement for individual users?
First of all this means you need to know the
algorithm how to control it per user. I.e. what you are going to do to set up this amount for each user separately (and how much major work you will need to invest into this minor setting).
As about your problem... I guess this sentence appears not from default miniBB, but from the Anti-guest add-on you have installed. You can always know yourself where to find the reason of the problem, if you follow
How to find where to edit this and that advice. In your case, search in forum files for "
Because of spamming issues" phrase, and you will find the variable called
$anti_guest_rule1, most probably located under your language pack. Now search for "
$anti_guest_rule1" in all files, and you'll find it's located under
addon_anti_guest.php. Searching for "
addon_anti_guest.php" will bring you the piece of code located under
bb_plugins.php. In that code you will find a variable defining your limit...
$membersRule.
It's all simple if you
know what you are doing, and not wasting our time to do it for you...