Hello,

IRS Direct Connect and Insight Online have been retired on November the 30th, 2022 by HP and are no longer accessible.
My Employer got notified by email and I couldn't find an announcement on HP's Website, but here is a migration guide they linked in that email from November.
https://support.hpe.com/hpesc/public/docDisplay?docId=a00123510en_us&posn=EM_TXT_S1&jumpid=em_0pvxxmoei_aid-520066529