Google is the only source with its own help section, because it accounts for most of the support volume and has mechanics no other source has — three connection methods, a separate Customer Reviews programme, and one profile per widget in the single-source app.
Everything not on this list is covered by common problems.
Three connection methods rather than one, a separate Merchant Center programme with almost the same name, one profile per widget in the single-source app, and by some distance the most support volume. None of that applies to the other seventy sources.
Google cannot find my business, which is almost always an address entered without a name. And a deleted review still showing, which needs support and has a same-day workaround.
