I see housekeeping are not doing their job. Several beds not made. Strawberry jam all over the carpet. Cabinets left open. And don't get me started on the shoddy carpentry work on those walls. I would have asked for a refund.

Lovely. You're really good at putting these things together.

No. Not saying that you won't find anyone, but there isn't an official program/system for such support.

Don't hesitate to ask for help on the forums though, there are a lot of skilled users here which may help you with your problems.

All artwork in .png format can be used in CC3+.

Generally just put the .png files in a folder under the Symbols\User folder in your CC3+ data directory, and optionally import them into symbol catalogs.

Of course, CC3+ symbols are more than just the backing image, they have properties and configuration to make things easier, like houses that aligns to roads and doors that cut walls and symbols that automatically go to the right sheet. Artwork not made for CC3+ won't have all these properties unless you set everything up for it.

When tracing, it is important when picking the entity to trace that you pick a point that is part of the traced portion. CC3+ uses this pick point to determine which way to send the trace around the entity.