A theory
So I believe that the TVA we see in the Loki series is not governed by the Time Keepers, but the Time Twisters. They are the opposites of the Keepers and strive to break up the timeline rather than keep it together. The reason is that Mobius mentiones vampires, and in my knowledge, only the Time Twisters dealt with vampires. Plus, the logo is an hour glass in the form of a twisted loop. So when Loki is sent to the TVA by Sylvie, he is sent to where the actual Time Keepers are. That's why Mobius doesn't recognize him.















