My GLS tracking is not updating or stuck. What should I do?

First, re-check the number for typos and confirm it is the correct GLS reference. Tracking can pause for normal reasons: weekends and holidays, peak periods, or customs clearance on international routes. Cross-border parcels can also go quiet during the handoff to a local delivery partner, which is why a universal tracker like InstantParcels helps. If the parcel has not moved for several business days, contact the sender or retailer first, since they hold the contract with GLS, then GLS customer service in the relevant country.