Part 107 UAS pilot reported an altitude deviation from their LAANC authorization and cited lack of recent flying experience as contributing to the event.

Narrative

My crew is still a bit new to using drones and this was a failure that we have learned from. We will be better about double checking in the future. I was the visual observer for a sUAS flight where we were getting video of the surrounding area. I grabbed the LAANC for the pilot while they set up some of the gear. We originally planned a smaller area so that we could fly up to 300 ft. AGL; but before we flew and requested the LAANC we decided we wanted to fly a larger area. When we changed the area we knew that it would lower the max altitude to 200 ft. but when we were doing the preflight checklist and setting up the drone; we forgot that it was no longer 300 ft. AGL and set our max drone height to 279 ft. AGL. I think we were a little rusty after not flying for the last month and should have been more careful when double checking the LAANC. I only realized the mistake when we were looking at airspace later and I saw the previous LAANC was at 200 ft. and we checked the flight data from the drone and saw we flew above 200 ft. AGL during the flight.APP for LAANC: (maybe the LAANC authorized info should be a little less busy but it was a human memory/should have re-re-read the LAANC again right before takeoff here)