I am among the people that had a problem recently with an auto ship not showing up. It was my horse’s oil not his regular supplements. I will say that I was impressed that once the problem was brought to their attention they shipped it out overnight air without my asking. I have not had any issues with my actual SmartPaks showing up on time.
Depending on what supplements you need I have ordered from Platinum Performance and Amazon for things I can’t get through SP. Being on the east coast shipping from Platinum Performance takes several days. I often use ValleyVet for meds so that might be another alternative option.