The forum will be undergoing some routine maintenance over the next several hours. You should not attempt to post anything, since any posts may be undone - if you do, keep your own copy of whatever you post so as not to lose your work if the server is reverted or changes are undone.
During this time, the server may be in readonly mode or not, and will be up and down multiple times. Some updates undo readonly mode or require it to be off, so even if it looks like it is working, until there is a reply here it may not be finished, and any posts may be lost.
I expect the update to take at least several hours, maybe longer, and may not be entirely successful.
I will reply here and on the Keyboard Maestro mastodon account when the process finishes.