An ongoing AWS incident has been impacting performance for users of the workstation app all morning. AWS has confirmed the issue is not specific to ShipHero (there are also lots of people on Twitter complaining) and they are working on the problem.
However, we released earlier this year a new Packing App which you can download at https://app.shiphero.com/apps
The Packing App communicates between the printers, scales and shipping.shiphero.com directly, cutting AWS out of that step which means it isn't impacted by this issue.
Users of the Packing App are not impacted by this issue and we recommend you adopt the Packing App to resolve this incident and to avoid impact from inevitable future AWS issues.