Hello,
I’m very sorry for the inconvenience! This issue is currently known, and has been reported, so it will hopefully be resolved ASAP! However, I’d urge you to make a support ticket so that an admin is able to give you these spawners back. Include this screenshot and any additional information in the ticket, to help speed-up the process.
Here’s the link:
https://forums.manacube.com/support/
Have a nice New Year!