Amended return status

I filed an amended return to claim the stimulus payments for my child who I initially hadn't claimed on my return back on September 11, 2021 but it's still only showing as received but hasn't been processed yet- and at the top of the message where the status bar used to be now says take action. I called once 4 weeks ago and they said they couldn't find any reason I would have needed to call but it's been 21 weeks now and I haven't received any written correspondence from IRS either! So what does this mean?