Seriously, confirmtx is not a scam who is asking to pay you money I just shared to rebrodcast your transaction that might help for free. I shared it on the basis of my experience.
I doubt you have ever used confirmtx. Otherwise, you would know that they do ask for money.
Did you read my post? I entered a transaction ID on their website and they asked me to pay them $999, so that the transaction gets 3 confirmations just in 1 minute. Isn't it obvious enough they are scammers?
You will see that they are using re-broadcasting as a method of expediting the transaction but their ultimate goal is to clear the pending transaction.
As already said, rebroadcasting is different from accelerating.