When flying VOW or VEF, you must only fly red/allied/US planes. You must not fly Blue/OKL/Axis. You should also use default skins and correct country markings, i.e. Russian markings.
When launching from hyperlobby, ensure you are in a correct slot. The host will normally say in the Hyperlobby mission description whether the red or blue slots are at the top. Each side then occupies either the top 50% of slots or the bottom 50% to ensure an even distribution of pilots.
Once the mission has loaded, you must select one of the "Red" planes. The selection of country you will choose will be Russian

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