Disputaciones, there was a time when all correspondence was done by post if one lived at a distance. It worked then and I'm sure the sisters would answer promptly any questions you have, by mail.
It is a nice surprise to see a group of nuns who are not using these more distracting means of communication. I should think that they don't use them as they would distract from their recollected contemplative life.
Not that I know these nuns. I was not even aware of their existence so what I say here is only surmising.