In case anyone is wondering why LoTW has been down since last night...

/We are in the process of responding to a serious incident involving
access to our network and headquarters-based systems. Several services,
such as Logbook of The World® and the ARRL Learning Center, are
affected. Please know that restoring access is our highest priority, and
we are expeditiously working with outside industry experts to address
the issue. We appreciate your patience.
/

https://www.arrl.org/news/arrl-systems-service-disruption