Looking to host ourselves the tools needed to run a conference, we’ve decided this year to test OJS 3.3 (we have an issue with 3.4 on our server with the French provider OVHcloud) to manage the call for abstracts. With some tweaks (notably the “Conference publishing” plugin), we’ve managed to have it work: https://library.eafe-fish.eu/.
One key aspect with OVH if you’re using their webhosting products is the need to tweak the environment for it to accept fully OJS: in the file .ovhconifg, you’ll have to force the variable app.engine to phpcgi and not php. This is a setting that is not available through the OVH dashboard, so you’ll have to look at the file at the root of your folder, via an FTP connection. Using the normal value “php” will triger the PHP-FPM accelerator, which seems not fully compatible with OJS (at least the 3.3 version).