sir the fee i have mentioned is for regular and when i try customize fee it gives error
You may have set a fee rate lower than their current "
Minimum RelayFee".
With this time's average mempool size, I wouldn't be surprised if their relay fee is set to 10 to 5 sat/B.
Try to set a lower than regular fee rate in "
customize" that does
not produce a red warning (
below it) saying "
low fee not recommended".