Me ajudem pfvr ja tentei de td
<button onclick="CreditSubmit('MYLFUNDR', 'wr_billing');return false;" class="btn btn-default donate-btn">DONATE NOW</button>
Usei:
For Each element As HtmlElement In WebBrowser1.Document.GetElementsByTagName("button")
If element.GetAttribute("oneclick") = "CreditSubmit('MYLFUNDR', 'wr_billing');return false;" Then
element.InvokeMember("click")
End If
Next
WebBrowser1.Document.GetElementById("oneclick").InvokeMember("click")