I decided to get a few more leaves from Gobber so I could get one more extra pathway but that was my big mistake. When I tried to buy the 1500 leaves dragon and a few pathways, I was disconnected and I lost the leaves and the purchases. Lesson: never leave things until last moment. (Also, the event timer for me said there were still 3-4 days remaining for me. Was it bugged or is the timer not for when the event ends?)
Edit: turns out I was dumb and didn’t realise it had just been removed from news/events section. The disconnect was just bad luck. Lesson: when deciding to pick up the game again after 6 years, check the update logs.