Scroll of Heroics bugged
Did the first 100 scrolls max out all the core map hero challenges? I would hope it wouldn’t let you consume any more scrolls if you have, but it could explain why they stopped giving you any more points.
I looked it up, yes they maxed out my hero points at Tyria. I can still consume them, if you are not patient at that you can waste a huge amount of Proof of Heroics. That really should be fixed soon!
I’d raise a ticket with customer service, they may be able to replace the wasted proofs.