Powershell automate Post of file on Website but unable to close Website popup windows close or ok

Good day, please help

i am trying to automate the uploading of files to a website.

1. requires to login > close popup "welcome message box" close window

2. then select upload link > then select which upload toggle button option > click upload liink > then again OK on "upload message" popu box

i got to the point where i login but i cant seem to get to the close "X" window on "welcome" popup messge window after login

probably going to have the same issue on the popup window when upload

i checked the html source but dont find the "X"button on form as its a form window with no button and i got the script to close the window but it closes all the windows including the main window i want to upload files

Import-Module wasp

 $url = 'http://page/login.seam'
 $username = $args[0]
 $password = $args[1]
 $ie = New-Object -COM InternetExplorer.Application -Property @{
    Visible = $true
    Navigate = $url   }
while ($IE.Busy -eq $true) {
      # System Sleep/Wait
        Start-Sleep -Seconds 5
      # Focus window iexplore
        $window = Select-UIElement -ProcessName iexplore
      # Close Alert key stroke
        $window | Send-UIKeys '{ESCAPE}'
}
# LOGIN page
$ie.Document.textbox
$ie.Document.getElementById("j_id:nick").value = "test"
$ie.Document.getElementByID("j_id:submit").Click()
## TRYING TO CLOSE THE POPUP WELCOME WINDOW WITH NO BUTTONS BUT A FORM CLOSE
$ie.Document.getElementByID("j_id36:j_id40").Click()
$ie.Document.getElementByID("j_id36:messagesPanelFirstHref").Click()

## close IE
#Get-Process -name iexplore | Foreach-Object { $_.CloseMainWindow() }
#$ie.Quit()
#[System.Runtime.Interopservices.Marshal]::ReleaseComObject($ie)

Please any help, i would need more help after this as i dont know how choose on option toggle which upload file i want to choose but i want to get past this hurdle first.

Regards