In this update I added 4 new placeholders:

• %buycraftAPI_top_donor_current_month_name_<number>%
  
• %buycraftAPI_top_donor_current_month_price_<number>%
  
• %buycraftAPI_vault_top_donor_current_month_name_
  <number>%
• %buycraftAPI_total_earnings_current_month%

The difference between current month and monthly is this:
Example Current Month: 1 February - 14 February
Example Monthly: 14 Jenuary - 14 February


I thank @ JackGamer180 for helping me with tests.