Pause script till website fully loaded - Excel VBA - vba

Question

I'm currently trying to create a sheet which will extract tracking information for parcels sent out. I've worked out the following code for the time being but encounter the following issues:
The code continues before the page fully loads, I suspect this may be because after the initial loading is complete, it runs a script and refreshes.
If mouse is not rolling over Internet Explorer, high probability of a human verification with images. I understand this may not be possible to avoid but is there any way I can pause the script while someone completes the verification?
Sub RoyalTrack()
Dim i As Long
Dim ie As Object
Dim t As String
Set ie = CreateObject("InternetExplorer.Application")
With ie
.Visible = True
.Navigate "https://www.royalmail.com/track-your-item#/tracking-results/SF511991733GB"
.Resizable = True
End With
While ie.ReadyState <> 4 Or ie.Busy: DoEvents: Wend
Dim full As Variant
Dim latest As Variant
full = ie.Document.getElementsByClassName("c-tracking-history")(0).innerText
latest = ie.Document.getElementsByClassName("tracking-history-item ng-scope")(0).innerText
MsgBox full
MsgBox latest
End Sub

Answer 1

Managed to figure it out. Added a 2 second wait after page loads to allow loading and an error handler to identify if the required property is available.
Sub RoyalTrack()
Dim i As Long
Dim ie As Object
Dim t As String
Dim trackingN As String
Dim count As Integer
count = 2
Do While Worksheets("Sheet1").Range("D" & count).Value <> ""
Set ie = CreateObject("InternetExplorer.Application")
trackingN = Worksheets("Sheet1").Range("D" & count).Value
With ie
.Visible = True
' Variable tracking SF-GB
.Navigate "https://www.royalmail.com/track-your-item#/tracking-results/" & trackingN
.resizable = True
End With
While ie.readyState <> 4 Or ie.Busy: DoEvents: Wend
Application.Wait (Now + TimeValue("0:00:02"))
Dim full As Variant
Dim latest As Variant
On Error Resume Next
latest = ie.document.getElementsByClassName("tracking-history-item ng-scope")(0).innerText
If Err Then
MsgBox "Prove your humanity if you can"
Err.Clear
End If
latest = ie.document.getElementsByClassName("tracking-history-item ng-scope")(0).innerText
Windows("Book1.xls").Activate
Sheets("Sheet1").Select
Range("E" & count).Value = latest
ie.Quit
Set ie = Nothing
count = count + 1
Loop
End Sub