Soulver needs to know which format to use to identify valid numbers
Different regions use different formats for numbers.
For instance, in the United States, a comma is used as a thousand separator (1,000) and a period as a decimal point (1.5), while in Germany it is the other way around (1.000 and 1,5).
By default, Soulver uses the settings in your Mac's Language & Region system settings.
You can also select different settings in Soulver's dedicated region settings.
Choose your preferred region in the Region settings