I don't know why my account got an hourly spending error. It's strange that the account spending time is only 6 hours then it stops and takes 14 hours to spend again. Has anyone encountered this situation?
1. Self-limiting pacing algorithm
Facebook sometimes automatically divides the budget into the time slots it thinks have the best traffic. If there are weak signal moments during the day, the system will automatically stop to avoid spending at the most effective time.
2. Weak or unstable accounts
Some accounts (especially new, low threshold or lightly restricted accounts) often have local distribution like this.
3. Your market is active by certain hours
If your target is only strong online during a few hours, the ad will soak up spend during that time and “hibernate” during other hours.
4. Hourly competition
During high CPM hours, the ad is launched → distributed. When the price drops, it runs again.
To summarize: this is not a strange bug. I have encountered it a few times and when changing campaigns + changing files or letting the account run for a while to stabilize, the problem gradually subsides.