Engine Running on Block Fabric does not mean that your node is online. Please make sure to regularly check your Elevate account to ensure your Node is online and running properly.
If your Elevate Node(s) go offline and you use Block Fabric press on the 3 dots to the right of your Block Fabric server and choose Restart Server. After about 10 minutes up to an hour, your Nodes should come back online in your Elevate account
If that does not bring your Elevate Nodes back online try to destroy and reset up your instances. If you need instructions to set them up again feel free to look at the FAQ here
If restarting, deleting, and starting new servers doesn't work please check with the Block Fabric support team by emailing support@blockfabric.host