The host service of this website sent us a warning that it was using too much server CPU (constant spikes). It wasn’t due to hackers as I first thought. The culprit seems to be WP’s own plugins. We disabled some, did some tweaking suggested by the host service and the situation seems to have normalised. But a lot of functions are now (hopefully temporarily no longer working). Not sure how it’s on the other side, for the readers. As a temporary solution, I may do mirror posts on an old com site for the time being. So you won’t be seeing double. IT issues, argh…