  Disinformation, which is fabricated, misleading content spread with the
intent to deceive others, is accumulating substantial engagements and reaching
a vast audience on Instagram. However, the temporary nature of the platform and
the security guidelines that remove malicious content make studying this
disinformation a challenge. The only way to access removed content and banned
accounts that are no longer on the live web is by searching the web archives.
In this study, we set out to quantify the replayability and quality of past
captures of Instagram account pages, specifically focusing on a group of
anti-vaxx content creators known as the Disinformation Dozen. We found that the
number of mementos listed for these users' account pages on the Internet
Archive's Wayback Machine can be misleading, because a majority of the mementos
are actually redirections to the Instagram login page, and of the remaining
replayable mementos, many are missing post images. In fact, 96.13% of mementos
from the Disinformation Dozen accounts redirect to the login page, and only
27.16% of the remaining replayable mementos contain every post image. Combined,
these results reveal that merely 1.05% of mementos for the Disinformation Dozen
accounts are replayable with complete post images. Furthermore, we found that
the percentage of replayable mementos is decreasing over time, with a
particular lack of replayable mementos for the years 2021 and 2022.
