Tuhi Stationery Ltd review for Starshipit shipping automation

Currently have over 900 orders not writing back to shopify - seems to have a meltdown every Xmas with the volumes and breaks down. Every year for past 3 years someone in their team has manually updated my system so that the hundreds of orders show as fulfilled...but now no one knows how to do in Starshipit, so I am stuck myself working through 900 fulfilled orders from shopify that are showing as unfulfilled, individually checking each one has been delivered in starshipit - then marking as fulfilled in shopify - what everyone wants to do on a sunny sunday afternoon.