Any idea why BTC confirmation taking days to confirm?
The block can't be validating a lot of the transaction. The unconfirmed transaction gets stuck on queue due to the increase transaction fees.
Sometime BTC get refunded to Sender....Should we use high fee like advance option for send BTC?
If some of your amounts back to the sender or your wallet, And you will be able to replace your fees with the second transaction.
if i want to send 1500$ BTC then how much network Fee should i use to make BTC confirmation fast?
Over 65k satoshi if you want to get a confirmation less than 10 minutes.
Over 260satoshis/byte.