VBA to enter one cell into a webpage, then enter another

I have a list of numbers to put into a webpage. I want to enter the first value (cell A3) then enter A4 and so on. The VBA code I currently have logs a user onto the website, clicks initiate request, enters the first cell, presses submit, copy/paste the data back into excel, then returns to the first page. I want to make my code so that it does this process (clicks initiate, enters the number, presses submit,copy/paste,) again and again for however many numbers are in the column. How do I accomplish this?

I currently am able to log on , click the buttons, enter the first value (cell A3), click submit etc. When I return to the first page with this code, excel just stops. It doesnt enter the next number on the list.

Set IE = CreateObject("InternetExplorer.application")
    IE.Visible = True
    IE.Navigate ("http://URL.com")


   With IE
    Do
    If IE.readystate = 4 Then
            Exit Do
        Else
            DoEvents
        End If
    Loop

     'Enters username and password , submits with continue button
    With .document.forms("signning")
             .UserName.Value = "userr"
             .Password.Value = "password"
        .document.forms(0).submit

    End With


With .document

        t = Timer
        Do
            On Error Resume Next
            Set elems = .document.queryselectorall("input[value=InitiateRequest]")
            On Error GoTo 0
            If Timer - t > MAXWAIT_sec Then Exit Do
        Loop While elems Is Nothing
            If Not elems Is Nothing Then
             elems.Item.Click
            Else
            End If

    lastrow = ws.Cells(ws.rows.Count, "A").End(xlUp).Row


    For i = 3 To lastrow
        Set svalue1 = .getElementbyID("accountNumber")
            svalue1.Value = ws.Cells(i, 1).Value
            i = i + 1

        For Each eInput In .getElementsbyTagName("input")
                If eInput.getAttribute("value") = "Submit Request" Then
                    eInput.Click

        Exit For

                End If
        Next eInput

             IE.Visible = True

Then I copy and paste the info (this works correctly) and I protect the sheet. Then I navigate back to the start where I want to click initate request again. IE.Navigate ("https://URL.com")

    Exit For

Next i

    End With

 End With