Build and Battle Reset daily's based on 24 hour. (Alternative is alternative token)
Build & Battle mode reset free token by 24 hour ago, where u click start or when u finished it 24 hour ago. Sometime i missing it because finish it at last 30 minute before 1600 UTC
However it can be easily fixed by giving temporary token on 1600 UTC for everyone etc.
- Shop system can introduce that by selling (temporary token) in shop based on expiration date (expiration sale like some costume based on season)
- Coupon system and display coupon to redeem temporary token per day
It actually based on how the development team able to isolate every system like shop system, coupon system, currencies system and battle system, change of each different system should be confident and don't affect the live service of the system.
PTCGL is lot of bug only because battle system is very not easy on TCG's rules. But other systems are actually easily solved by every other games on the market, where literally should not have any issue… unless occasionally mistake in cascade change of game engine etc