I used MyUS for years and I have two stories for you:
1. Now due to corona they can no longer export medical items out of US; I had some masks from China with them since March 2020 and they charged me for months 15USD EVERY DAY for a small box of face masks - storage tax :)) )
Oh wait it gets better, I was told that I should discard the item if I don't want it... the only issue is that the interface (online - web or mobile app) doesn't offer you this option.
Now that I canceled my account they again charged me 40USD for having to throw away (or just keep it for themselves) the face masks.
1 box of 50 face masks costs ~ 200USD per month, more than my garage rent in Switzerland for a 2 tons car (180 USD).
2/ A few years ago, I placed an order to have my goods delivered by MyUS to a location in Europe. A few hours later I realized that I should have sent the package to Dubai (where I was living). However, not only that MyUS refused to stop the package from being sent but also when it arrived in Customs they wanted to take it back and all of a sudden become much more responsive and very interested in recovering my goods for themselves...
So asking them to simply do stop the delivery and have the goods sent to the correct address was too much of an effort for them but recovering the package from oversees to keep 2000+USD goods for themselves that activated them very fast :).
Just check out alternatives - MUCH cheaper and better service.
We do apologize for any misunderstanding that may have occurred. Packages can be discarded from your account at any time. To do process that request you would select the package in your account and then use the drop down menu that lists the option to discard the package. Storage fees are charged for packages that are over 30 days in storage. Unfortunately we have no control over FEMA restrictions regarding shipping masks. We are only able to reroute shipments with certain carriers not all of our carriers will reroute a shipment. In those cases the return may be requested so that we can ship it back out to the correct address.