Monaco doesn't seem to be on the list of countries where you can buy a stock subscription. I don't see Monaco on the list of countries. Stock is a different product than Lightroom and what may be possible there may not be possible here. And I know by experience that small countries are very frequently left out, either because of administrative burden or simply because that are normally handled by a bigger country like probably with you in France.
Regards, Abambo Hard- and Software Engineer and Photographer.