Could you please correct your list?
The fact is that one of the services, namely SmartMix.io was charged with a scam March 23, 2018.
https://bitcointalk.org/index.php?topic=2815450.msg32960872#msg32960872
After that, several more users confirmed that they had lost coins.
To date, the SmartMix.io did not make any reply messages, which indicates that the service most likely ceased to exist.