IndMoney Charges and Vanguard/Fidelity Index funds

IndMoney Charges and Vanguard/Fidelity Index funds Can we invest in US based index funds run by Vanguard or Fidelity via IndMoney ? Is it possible ? Charges or any disadavantages due to investing via IndMoney ? Is there any better alternative for Indians based in India for Investing in these Index funds of Vanguard/Fidelity ? please help or suggest if anybody or anyone already has experience investing in such via any app or platform