If you don't have a problem with the privacy of your tx, can you post the id of the transaction which was accelerated by this service? I don't trust this service and it is not recommended for anyone to pay them for an acceleration, the best i think they can do is rebroadcast your tx, and that isn't acceleration.
What difference will make if he post the id of the transaction? We cannot judge the service unless we compare several transaction IDs, and if they are all mined through one mining pool, then the service is reliable, but the website design, the date of domain registration, and the attempt to hide the data, and the absence of anything that confirms that they are connected to a mining pool is all reason enough to stay away from the service.