I can't think of a link that would show you connection issues I am afraid....only the ones that show your upload/download speed. I guess it might be worth contacting your ISP just to double check but, unless you are experiencing frequent cut outs or downtime, I would think that it should be okay.
I am afraid that I am a little stumped.

I am not massively technically minded and it sounds as though you have really tried to make this work for you.
I know that you have already contacted support via the submission form but it might be worth calling them on their helpline number tomorrow so that you can have a good, clear, two-way dialogue rather than waiting for responses. They are open 9am-9pm Monday to Friday. The number is 0870 2432435 and the calls are charged at national Rate from a standard BT line.
I hope that they can help you out