If you already own cryptocurrency, the fastest way to cover a transfer fee is to send the required amount from a wallet you control. Save the transaction ID and any receipts, and wait for the necessary confirmations so you have proof the transfer completed.
If you don’t have crypto, many people use local Bitcoin ATMs to purchase Bitcoin. Bitcoin ATMs let you convert cash to on-chain bitcoin but typically charge fees and some may have cash or transaction limits; you’ll need a secure QFS Bitcoin Address (QR code below). After the ATM posts the transaction, contact your assigned agent so they can confirm the transaction. After the BTC is confirmed, you can send the precise amount required for the transfer fee and retain receipts for verification.