Thanks for posting about the flashing light and your connection issues, I apologise for any inconvenience caused.
I have run some checks from here and I can see that there's a few time outs inside the Hubs logs, an engineer will be required to attend in order to resolve this for you.
I will send you a PM (Purple envelope at the top) detailing what's required to proceed with making the booking. Please respond to me there and I'll get this sorted for you.
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