Complex sentence: This coincided with a successful campaign to become a Health Promotion Charity, which-opposed by the Australian Taxation Office-means BNV is now a registered charity, although without the right to Deductible Gift Recipient (DGR) status.
Split into simpler sentences: This coincided with a campaign-opposed by the Australian Taxation Office-to become a Health Promotion Charity. This campaign succeeded in getting BNV registered as charity, although not as a "health promotion charity" and so without the right to Deductible Gift Recipient (DGR) status.