I'm not sure that's true actually. They have been planning mobile ticketing for a while but my guess is that they were told by somone, probably the PL, to implement this particular system (Fortress GB) recently.
I could be wrong but I reckon this could be a different system to the one used at the Everton game, which was probably part of SeatGeek, our native ticket system. If that's the case, we've had to install this and link it to SeatGeek (and any other impacted system). This will have caused all these problems, which, less than 72 hours before the first game, they still haven't resolved fully. And the Everton game, with just 10,000 fans, was far from faultless.
I could be wrong but, if I'm right, we'll be using a new system that's had no significant testing at any sort of scale, not 5,000 people, not 10,000 people and certainly not 50,000 people. Some clubs have taken a sensible approach and are implementing this with a subset of users or (as I believe in Burnley's case) not at all this season.
I hope the problems are non-existent or, at worst, minimal on Saturday. But I'm very nervous if we have implemented a completely new system with little real-world testing at scale, when 50,000 turn up and try to gain access.