After you get "acceleration succeeded" message, you have to wait for ViaBTC to mine a block... They usually mine 5-10 a day (average 1 about every 4 or 5 hours... sometimes more , sonetimes less)... but you should get confirmation within 12 hours at most.
Can confirm that ViaBTC TX accelerator works well... it is just busy these days and you have to time it right! But at least it is free!
EDIT: I just went to test to see if it would accept your transaction... and it said Acceleration succeeded! So next time they mine a block it should hopefully confirm
It has been around 3 hrs since they mined a block, so hopefully they get lucky and find one soon
EDIT2: And now you have 8 confirmations
you're welcome...
Included In Blocks 471321 ( 2017-06-15 02:45:02 + 932 minutes )
Relayed By ViaBTC