@samran10 Thank you.
I cleared the cache and checked all plugins whose compatibility status wasn’t known with their latest updated version without any success. All of the embed codes are correct, as they were formerly working.
I think the changes might’ve happened after some plugin changes. (I tried to restore the plugins to an earlier date via Updraft Plus, but I’m having issues as the backups are incremental changes only and I deleted earlier backups due to storage issues.)
I successfully embedded youtube videos onto my site, so it’s definitely something up with Rumble videos.
Appreciate any thoughts again.