FMM003 OBD unavailable during AC charging

I have bought a FMM003 for personal use wand it works great, in most parts. I have attached it to an Ioniq 5 with deep sleep configured.

OBD data is read properly while I am driving and while I DC fast charge, but I cannot make it work when AC charging.

"Prot:6,VIN:’redacted’,TM:15,CNT:4,ST:IDLE,P1:0x80000001,P2:0x80018001,P3:0x21,P4:0x1,MIL:0,DTC:0,ID3,Hdr:7EC,Phy:0",

"status": "completed"

This is the response from obdinfo GPRS command. How can I make it work during AC charging ? I can for a minute get OBD info if I issue cpureset but then the OBD ST goes back to idle