EP760: Can't edit Grid Discharge Power value

@BLUETTI_CARE Under Energy Buying/Selling settings I can enable or disable Feed Into Grid. However I do not see the > symbol to tap on edit the value. When system was installed couple of weeks ago I had to ask a Bluetti tech to change the value for me remotely. It would help if I can this myself. I was told it does not need Pro Mode and it should be editable. I have tried on another Android device and same issue.
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Android on tablet: Version 16 Kernel 5.15.180 patch level 1 Dec 25.
Android on phone: Version 12, Kernel 4.14.113 patch level 1 Mar 23
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EP760 Firmwares:
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IOT Comms 9043.18
EP760 ARM 5023.27
EP760 DSP 5022.21
B500 Safety Module 1026.10
B500 BMU (BMS) 1028.07
B500 Over Voltage Module 1027.06
BMS BCU 1025.27
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Thank you
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