VBA IE check and uncheck the checkbox with same-name and different-values "document of object iwebbrowser2 failed" error

[Ray_Dem]

As you can see i tried many different codes but i'm still getting "document of object iwebbrowser2 failed" error and i have no idea why please help

[/ICODE]
My HTML Code

<tr>
<td width="4%" align="left" valign="middle"></td>
<td width="96%" align="left" valign="middle"><font face="arial" size="1.5">
<input align="top" type="checkbox" name="R_CustInst" value="51">
<b>BANK2</b></font></td>
</tr>
<tr>
<td width="4%" align="left" valign="middle"></td>
<td width="96%" align="left" valign="middle"><font face="arial" size="1.5">
<input align="top" type="checkbox" name="R_CustInst" value="52">
<b>BANK1</b></font></td>
</tr>
[/CODE]

My VBA Code

Sub test()
    
    Set sht = ThisWorkbook.Sheets("Sheet1")
    Dim IE As Object
    Set IE = CreateObject("InternetExplorer.Application")
    IE.Visible = True
    IE.Navigate "http://"
    
    Do
    If IE.ReadyState <> 4 Then
    IE.Visible = True
    Exit Do
    Else
    DoEvents
    End If
    Loop
    
    'Dim chBox As Object
    '
    '    Set chBox = IE.document.getElementsByName("R_CustInst")
    '
    '    chBox(52).Checked = True
    IE.document.querySelector("[name=R_CustInst][value='52']").Click
    
    'IE.document.getElementsByAll("[name=R_CustInst][value=52]").FireEvent
    '<input align="top" type="checkbox" name="R_CustInst" value="52">
    'IE.document.all("R_CustInst")(52).Checked = True
    'IE.document.getElementsByTagName("BANK1").Click
    'IE.document.getElementsByValue("52")
    'IE.document.getElementByAttribute("Type").Click
    'IE.document.getElementById("Type").Click
    'IE.document.querySelector("[name=R_CustInst][value='52']").Click


    Set IE = Nothing
    
    End Sub
[ICODE]

i'm new to this and i'm a mess been at it long and i give up Please help PLEASE! 
What i want to do is => On that same site i have to tick on 4 Check box and 2 radio button to fetch the table data,than copy paste the acquired table in excel sheet but i can't get pass even a single one.
if nothing work how do i get the table data from already checked, submitted and fetched data table from open browser to Excel sheet 
Can we not use "BANK1" or "BANK2" names to get the elements as they are the Unique '<b>BANK1</b>' like #input where tag is BANK1 or something. i'm not sure what am i saying but maybe?