This one most likely would not have worked for the OP as their transaction only had an 8 sat/byte fee... ViaBTC require a minimum of 10 to be able to use the free accelerator.
about 99.9% sure that the AntPool one no longer works... which is a shame... it was relatively reliable "back in the day"
It was something of a secret and then someone plastered it all over these boards/reddit etc and it basically became useless
In any case, it seems
the OPs transaction got confirmed
by BTC.com... I wonder if they ponied up the massive fees that BTC.com charge for acceleration?