To answer your questions first; no and no.
GH seems to be more finicky since the last update, especially with rooms. Here are a couple of suggestions.
Make sure the bulb names are simple like garage light, bedroom light, etc.
Try saying telling GH to turn on the room, rather than the light name, e.g., “OK Google…turn on the bedroom.”
Another thing you can check is what GH thinks it heard. From the App, select 1 of the rooms or bulbs you tried unsuccessfully to turn on/off. From the 3 dots (top right) select My Activity. There you can see what GH thought it heard. Note: “Web & App Activity” needs to be “On” to see this. It is found under Google activity control from the GH App or from a browser.
Hope that helps.