I am currently using a CubePilot autopilot with a Mauch current sensor to monitor the current consumed from the Li-ion battery in my drone and would appreciate assistance in resolving an issue I am facing with this setup
You will need to describe the issue in detail, probably also include a good description or diagram of the battery connections and related wiring.
The PX4 forum is probably the best place to start for PX4-related settings or issues.
PX4 Discuss
Follow up was in PX4 Discord: Discord