MHiguersR wrote on Jan 17^th, 2019 at 4:32am:

Hello, I bought the B777 from Camsim at FSPilot Shop today, paid about $60.00 after reading that it was compatible with P3D. Updated it to the latest version, and upon opening the aircraft on my P3Dv4.3 there is no landing gear, all the instruments in the VC are dark, the engines are running. Have reinstalled it as recomended with no result.

Right, the available 777 is not P3D4 compatible.
Moreover, the 777 for P3D4 is not going to be free for 32bit version users. So personally I'd go for refund.