token sale is exclusive for ETHEREUM and ERC20 wallet only?
how about some people who want to participate using bitcoin?
This has been done to safeguard contributor/investor interests. In the unlikely event of DEEP AERO ICO not meeting its softcap, funds will be refunded to contributors. The company will not be able to use these funds. This has been enforced by the ERC20 smart contract.
You will have to convert BTC to ETH and then buy DRONE tokens.