I am going through some pain with a number of unconfirmed transactions on my wallet.
The slider does not set the fee per kb or byte.  It sets a fee of BTC and does not change with the size of the transactions.
I tested it with two transactions and it does not change with the size (bytes) of the transaction.
The SLIDER IS LYING.

I have been advised not to send any more transactions because each transaction uses unspent inputs of the previous transaction, so it will not be executed until the previous transaction is finished.  So I have been stuck now for 3 days and still waiting while the price of BTC goes up and the network gets more clogged up.

Anyone knows when mempool gets flushed or can I possibly have my tx stuck for ever!