You may need to wait a bit longer for the system to update as sometimes it takes a little more time. The IRS has had to implement many changes in the last few weeks so they may be taking a bit longer. Trying using the following link to track your refund.
IRS processing time and refund status
The online link is your best option to track your refund. I have attached a link with more answers from the IRS as to why your refund may be taking longer to process.
Federal refund questions