The receptacle photo(ending 061) does not have a connector in the left side port. The receptacle is not a standard for RV installation. It should be a four wire range receptacle and matching male connector.
Second photo shows strange colored wires feeding main breaker. There should be four wires, black, red, white and green. Red and black connect to the breaker and connect to the shore power cord to parallel blades.
White should be connected to the isolated neutral buss. This the short buss on lower right and long buss on the left side.
Cannot tell from the two links if there is more issues.
You need to find some trained and experience RV help!
