Hi all,
tl,dr; if you enabled two-factor authentication on your
wikitech.wikimedia.org account this past week (since 23 March, 22:03 UTC),
the second factor may have been removed, and you should re-enable it.
The long version:
Several users in the past few days reported that they had 2FA required for
their wikitech account, but had not enabled it. This was my fault-- we
converted the database token format and didn't account for users who had
previously clicked on the "enable two-factor authentication" but never
finish the enabling process. These users (about 400, as best as we can
tell) were unfortunately locked out of their accounts as a result, after we
updated the token format.
I've disabled 2FA for accounts that looked like they were affected by our
update. Unfortunately, this may have disabled 2FA for users who recently
enabled 2FA also. So if you enabled 2FA on your account this past week, you
may need to re-enable it-- please login to wikitech and verify that 2FA is
still enabled for you account.
Apologies to everyone affected.
Chris