Initially, block group data for computer and internet use were unavailable for the 2013-2017 ACS 5-year release due to a processing error.
I am happy to announce that this morning the data has been released on American FactFinder. This applies to the following tables:
Updates to the API and data.census.gov will come later in 2019.
You can find more information as it becomes available at this user note.
In reply to Bernie: