I'm guessing this error is showing up on your web browser. If so, can you try clearing your cache and history then trying again. I'd test another browser too and see if the same thing happens. Please let us know how it goes.
if you having troubles removing your Web Guard on your phone you can just call the customer service they can manually removed it opn their end, if your account is Postpaid just dial 1-800-937-8997 and for Prepaid just dial 1-877-2106.. i hope it will works for you.
@legaspi has the right idea although its easier just to dial 611 can call and ask for representative.