Whether you ever order from us again or not is irrelevant, the most important thing to us is the livestock.
A couple important things to note: Diver's Den ships at a salinity of 1.025-1.026, which is going to be much closer to your home tank. We ship at a lower salinity (1.017 to 1.020) and 30 minutes is too fast of acclimation to the new salinity.
When ordering livestock online, we highly recommend having something on hand to help compensate for the ammonia spike when opening the bag OR, even better, match the salinity and temperature of the livestock you received in an acclimation container and then transfer the fish from the bag(s) directly to that container.
Hoping the Multicolor Angel is ok and able to recover.