For people who filed their 2021 tax refund early (for example those who submitted the refund in the last week of January 2022), they have received a notification from the IRS saying, “Your return processing has been delayed beyond the normal timeframe”. This message was posted on the IRS Check Your Refund Status on February 14 and February 15, 2022. This is unlikely to specific to your specific tax situation because most people have received the same message.
It’s likely the IRS has delays in processing and they sent this generic message to Millions of people.