The Library Guide on Journal Evaluation Tools, which provides a lot of information on journal metrics, can help you fact check journal information (such as Impact Factors).
This guide is just that, a guide. Ultimately it is up to each author to make the final decision on where to publish and to decide what they expect from their publisher.
Megan N. O'Donnell authored this guide. Last updated on 2023-01-04. First published in 2016, this work is licensed under a Creative Commons Attribution 4.0 International License. The graphic icons from icons8 and can be reused as long as attribution is retained.