Well all I can say is that I am far away from having a very good gear on my gatherers (the highest items are still 0% for me) so it cant be that you need them. And if you are at 229/230 and still have all 3 stars open it must be something else or you would have a lower number there. (Not sure how many 3 stars the BTN has but its definitely more than one) Folklore are counting in this and all the stuff you get from those other special nodes that will spawn after you gathered some other nodes. (Sorry not 100% sure what they are called in English)

I think that I never did all the favors so they should not count in this. So if you have done everything else, than this is mostly a bug.