It's not clear how that happened, but when the beekeeper emerged from the manhole in episode 2, we clearly saw it was Wanda who did the rewinding.
The question remains whether someone else is in charge of reality and blocked Vision seeing the truth, or whether Wanda herself is in charge -- and she'll even manipulate her beloved Vision to block out harsh reality.
The voice-over again hints at an artificial reality ("Escape to a world all your own...").Meanwhile the ad's tagline is "Find the goddess within." That could mean two things: Wanda could free goddess-like power within herself, or it could mean that a goddess is in some way trapped within something -- perhaps referring to the constructed reality Wanda and Viz live in.
Wanda coldly ejects Geraldine out of the sitcom reality, yeeting her past some kind of forcefield to land in a field where she's swarmed by armed agents.