Shore Power Fault

Hello I have a 20204 Thor Tranquility 19P motorcoach on a 2023 MB Sprinter 2500 chasis. I bought the Bluetti AC 200L thinking that I could connect its 30amp AC outlet directly into my camper’s 30amp shore power inlet. I see that power is going into my camper because the shore power light is “blue/on.” But I get an error message inside my campers BMPro app “Shore Power Fault! The power cord has been connected to a faulty power source. Power will not be restored until connected to a properly working source.”

I have no issues connecting to my home AC outlet using a dogbone adaper that converts my home 15amp to 30amp and no issues connecting to a campground shore power.

What I’ve tried

  1. Tried connecting directly from AC200L 30amp connector to my camper’s 30amp in using the same charging cable.
  2. Tried connecting to one of the AC200L’s regular AC outlet using my dogbone adapter.

My camper’s inverter is off.

Thanks for any advice/insight