I will take vouch copy if it really works and not viabtc because everyone knows them and always get error message with them "Submissions are beyond limit. Please try later."
I have been using the tx accelerator of ViaBTC with no problem. I didn't even know you could get an error. Thanks for the information.
O.P.
0.01 for a method of accelerating btc transactions is just too much, but if there is a guarantee and the review from the vouch copy is good, I maybe interested but not 0.01.