Nikonix

I cannot say that I experienced exact same problem. Since I have my tripod (horizontal) plate mounted to the grip, and mostly get the grip out when using my tripod. However, what I can say is this : with the grip connected : the readout of the battery status is very erratic. Some moments you see the status of all 3 batteries. Other moments you only see the onboard camera battery status showing up. I usually have the grip in "booster" mode. Same thing here : when the battery status of the grip's batteries comes on/goes away, the warning for "booster" mode shows up/goes away. I hear you say : bad connection. Ok, but this is on a steady camera, sitting still on top of a tripod, nobody touching anything. Wouldn't be surprised (not yet tested), if the grip's shutter wouldn't trip, when the battery readout falls out. What this is telling me, is that I would not rely too much on this VPB grip, as a field solution. It doesn't show reliability as it should. Yes, I should have sent it back to Fuji, but I don't know if the error is situated in the connection inside the grip or the camera. Since I don't want to be without camera for a longer period... I am hesitant.

you need the fuji m mount adapter, as stated in the manual (p 129 : adapt settings for lenses with M-mount connected with optional Fujifilm M Mount Adapter). (understand : type (Leica) M-Mount lenses) better read here : https://fujilove.com/fujifilm-m-mount-adapter-whats-the-point/ or view this : The adapter itself has a function button to set the menu correctly (cannot (yet) be done with none electronic third adapters) as for the sub monitor : EL and AFL are two items that cannot be changed / the other 8 items can (4 text + 4 pict) / however, I don't understand how you can set your camera to operate with the EL constantly showing. This only comes on, when exposure lock is activated, and will be shown (because it matters) on all 3 monitors (not just sub monitor)