I did some work at Exeter University around 8 years ago, we put up temporary signs for 3 years all around the development with QR codes linking to a webpage explaining about the works. At the end of the project I was told by the University IT bods that they’d been used maybe 10 times during the entire project.
Strange, I’ve been with Vodafone for the past 18 months, switched from BT, can’t fault the Vodafone service or router at all. Had Sky also previously, and to be fair the Vodafone one has been the most reliable out of all of them. All of them have poor customer service but theirs is by no means the worst.
Got any Apple devices connecting to the wifi? I had no end of problems with the router dropping the wifi signal and needing resets. I've heard since I left that the particular router they supplied me might have a major bug if an iOS device is on the network.