Version 3.14.0 has brought slight changes to the start view.
The idea was to remove some buttons and make it easier to operate the most common task.
So from now on, simply tap the numbers to start the count down. If the count down is running, tap the numbers to sync to nearest minute. These are the most important tasks with the count down, the numbers are like a bigger button.
If you have set a pursuit start time, start, pause, sync, plus and minus are disabled, so you don't accidentally interrupt the timer. To revert back to normal, enter the timer view again and exit it with the cancel button.