The Operating System (OS) on which all of PPT runs is going to be end of life very soon.
I plan on upgrading it from CentOS 7 to AlmaLinux 8 in the coming weeks. There may be some downtime during this process.
Of course, The PPT Forum site will be the primary focus to get working first
ETA: There is a LTS version that we have been able to use to continue as-is since the above original post.
However, it is becoming increasingly evident that we need to upgrade "everything". Ideally minimal downtime, but I have homework to do on this... Stay tuned.