We will be moving to a new host in the next days. (Between 10 and 15 September 2023).
The site may temporarily go offline in this time. But don't worry! In a few days we will be back on a faster and better host.
Update: Part 1 of the move has been completed. We are now on a faster host.
Update 2: Part 2. Updating the CMS, during which time the site will be offline for - if all goes well - about half an hour. Done. But the layout apparently has been lost.
So, still to do: fix the layout.