Hi @Esther1 . There could be a number of explanations, either related to the new meter installation or separate from it. As it will require direct access to your account to investigate, we won't be able to assist through this community. I'd suggest getting in touch with customer service via your preferred method.
The best way is by logging into your account and clicking the Message (💬) button in the bottom right, or the top left on the AGL app.