Pennsylvania's Department of State scheduled a system maintenance update to its voter registration website the same day former President Trump returned to Butler, where he survived an assassination attempt in July

The operation would have taken the site offline for several hours during the same time frame the Trump campaign expected to register voters. The department, however, moved the window of time for maintenance to later in the night amid an early outcry.
https://www.foxnews.com/politics/battleground-state-under-fire-scheduling-voter-registration-site-go-dark-same-day-butler-rally