The code is not badly written, but this solution requires quite a lot of work for your average publisher / site manager, especially to make it scale. You need to pay for an SSL certificate (and set that up - many hosts charge extra), an Apple Developer License ($99/year), and the infrastructure to manage it all.
With full disclosure that I'm a co-author, I'd really encourage less systems-savvy site managers that don't want all of that upfront cost to check out PushUp Notifications - and I'd be interested in exploring integration options with this author.
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