In the second step, I think I see a typo in the instructions.
Under b) Find:
<input type="submit" class="button" value="{vb:rawphrase complete_registration}" tabindex="1" accesskey="s" />
You have:
Change to:
<input type="submit" class="button" name="timeremaining" value="{vb:rawphrase complete_registration} in {vb:raw vboption.StopBotRegMinTime}" tabindex="1" accesskey="s" onsubmit"submit_form()") />
The "onsubmit" is missing the =
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