Do you know the accounts used for the swaps?
The last time I used @leodex swap, the swap was having an liquidity crisis and @leodex simply kept the 10 HIVE I sent them.
I found that it is worthwhile to use a blockchain explorer to verify that the swap iws working and has the funds needed to fulfill the order.
!PIZZA
I'm not really sure what you're asking here. If you're worried about liquidity, you can check maya protocol pools at https://www.mayascan.org/pools