We have all been receiving the 48 month extension - which we personally welcomed as the 24 one would expire this July-.
Glad to know we're not alone waiting for almost two years: we filed April 2021, thought the case would be approved with no issue, but over a year ago we received an RFE, responded immediately, got the case transferred to another office and then status changed to "Case is ready to be scheduled for an interview"; all that in a single week. In October last year the status changed to "Fingerprints were taken" and recently learnt from the forum that was just a glitch; there is no movement since then. 😕
Instead of using the USCIS account, we check our status here on a daily basis since we received the new extension:
https://egov.uscis.gov/casestatus/landing.do