1)
Why does it mention here only Shafan? In Divrei ha'Yamim II, 34:8 it mentions also Ma'aseyahu and Yo'ach!
1.
Malbim (Divrei ha'Yamim II, 34:8): Here it discusses money of vows collected in Beis Hashem. There it discusses what the Leviyim collected from cities of Yisrael and Yehudah.