The input field “Increase today’s new card limit by” is greyed out when the limit has not been reached, e.g. when you have 5 cards due, but the limit is 10. This makes it impossible to decrease the amount of cards due today by inputting negative values, e.g. by inputting -5 to skip new cards for today.
I suggest that the option is available whenever there are new cards.
Also I suggest renaming the option to “Change the amount of today’s new cards by”.
Also “Increase today’s review card limit” could be changed accordingly.