2020 tax return statue

Hi

Filed through Turbo tax 1040 for year 2020.

got email confirmation on May 12th that return was accepted.

Also paid part of payment directly on IRS site

Now when I go to IRS site it says the return was not processed yet and I can not even make additional payments .

Why is it not processed till now if the return was made electronically and confirmed? should it be just few days