# Deployment Related Questions
# Can I extend the free trial deployment?
If you have special requirements or other conditions, you can submit a ticket or send an email (firstname.lastname@example.org) to us, and we will reply within 24 hours.
# How to connect to the deployment?
You can connect via client such as MQTT X (opens new window). You can also connect via the SDK, see Connect to Deployments for more information.
# What are the common causes for connection failure?
- Check that the deployment is in a running state and that the system will automatically stop for deployments that are not actively connected.
- Check that the connection address and port are correct. If it is a Standard instance, the port numbers are not 1883 and 8883.
- Authentication is required. You need to set a username and password in
Authenticationand connect via the correct username and password.
# My deployment has been deleted by mistake, can I recover it?
You need to double check the right deployment name before deleting a deployment. Deployments cannot be recovered after they have been deleted.
# How can I get the messages sent by the client in deployment console?
Messages sent from the client cannot be viewed directly in the deployment console and need to be persisted using data integrations for forwarding, while EMQX Cloud does not store client messages.
# How can I scale deployment?
EMQX Cloud supports automatic scaling by submitting a ticket. The scaling lasts for 5 to 15 minutes. During the scaling period, it will not affect the normal use of the service, but the device may be disconnected and reconnected for a few seconds. If the device is configured for automatic reconnection, it will not affect use, and the connection address remains the same.
If you still need to scaling after confirming, please reply: Confirmed, need to scaling the deployment name to specification.