You bought the companion.
Do you have the other Honda 200 to go with it?
The companion is only good for about 1750 watts.
The standard small twist-lock adapter puts a little twist on mine that causes it to vibrate out. Suggest getting the dog bone style 12 inch adapter.
Start genset, allow it to stabilize before putting load on it. Same with shutting down. Turn off load then let genset idle for a few minutes before shutting off.
Make sure you secure your genset. I use a 20 foot stainless steel dog tether with pad lock to secure to a non-movable object.