The sat/byte is actually higher than average by quite some bit. It should be higher priority than a lot of the other transactions in the block,
Unfortunately that isn't the case at the moment (the fees used on all of the transactions, including the parent transactions only range from 193+ to 368+, which means it's way below the needed fee of 960 satoshis/byte and as result, should be considered a low priority instead).
The fastest and cheapest transaction fee is currently 960 satoshis/byte, shown in green at the top.
Source:
https://bitcoinfees.earn.com/#feesThat's right. The issues are as follow:
1. Low fees used on all of them (including parent transactions)
2. Using funds from transactions that haven't receive a confirmation yet (unconfirmed parent)