Battery Charge / Discharge Anomaly

I have a Gen_3 Hy 5kW Inverter & a Gen_2 9.5 battery.
Yesterday I noticed that the battery wasn’t charging and discharging at its usual rate. I checked the GivEnergy app and Portal and they both said that the charge and discharge rates were set to the maximum 3600w. I refreshed the readings in the portal and it came back with the same figures.
Despite this the battery was not charging or discharging at its normal rates.
I checked the readings on the Android Inverter App and it showed me that the charge and discharge rates were set to 38 (they are normally 50).
I went back into the portal and reduced the charge and discharge rates and then set them to their maximum again. I checked the Android Inverter App both when I reduced the settings and when I increased them again. After being set to maximum again they were still showing as 38 instead of 50.
I did a reset to defaults this did reset the charge rates to 50 when I checked in the Android Inverter App. I went into the portal to set up my charge schedules for the Cosy tariff - they had not been reset. I then checked my discharge schedule - this had been reset - so I set it up again.
With lots of solar today I decided to reduce my charge rate to 2000w. When I reset it to 3600w I checked with the android app and it said that it was set at 38 again instead of 50. I changed it back to 50 in the android app rather than do another reset to defaults.
Has anyone else noticed their system not charging / discharging correctly? I have checked back through my data and this only started yesterday.

Oh dear. I guess someone at GE thought the portal wasn't very accurate and has recalibrated it against the system they were using.

They may not have realised that every inverter is unique and individual. Many of the components used to build the inverters have a +/-10% manufacturing tolerance (this is quite standard in electronics). Since there are only 50 power steps, to reach 3600W each step must be at least 72W. The design aim seems to be between 80W and 100W (ish). If the person was using an inverter with 95W per step, then 38 would equate to 3,610W or full power, but if yours only has say 85W per step, then at 38 you would only get 3,230W. Also the steps may not be exactly equal and zero is not always zero.

Realising this and that different kit will have different step sizes (AIO must be about 150W per step) is why my app uses the 0 to 50 scale that the equipment was originally designed with.