The IRS's refund tracking is a little slow. Give it a week or so to update (they usually update on Fridays). Then see if it shows up.
If it just shows as 'processing' then it's all good.
https://ttlc.intuit.com/questions/2840013-does-accepted-mean-my-refund-is-approved
They were NOT Approved the next day. Rather, they were Accepted, which means received for processing. Approved is a later step.