By the way, the Braille Display User's group home page explicitly states:
Subscriptions to this group require approval from the moderators.
under its Group Settings section. This means that subscriptions will wait until a moderator or the group owner clears them, so don't expect a "virtually instant" response saying you're subscribed to the group when you send a subscription request e-mail.
Brian - Windows 10 Pro, 64-Bit, Version 1903, Build 18362
Many of the insights of the saint stem from his experience as a sinner.
~ Eric Hoffer