Certain features of the app restricted to one country?

Suppose there is an app with three main core features. One of the core features can be used by users of any country and it will work fine.

The remaining two core features of the app may not work fine since the accuracy is not guaranteed and can show poor results.

Option 1 :

In this scenario, should one choose only that specific country where all the features will work

(or)

Option 2

For the users of other countries should one just display that this feature is currently restricted to this particular country?

Although you can cover more users with the second option,will it be a good user experience?

Which will be a good Design?