# Frequently Asked Questions

## Do I need a backup license?

Redundant cores don’t strictly require two licenses to operate, but the behavior depends on how the system transitions.   
  
If the plugin is running on the **main core** and that core has a valid license, everything works normally.   
If the main core fails and the system **fails over** to the backup core, the plugin will continue running even if the backup core does **not** have its own license. 

However, if the main core stays offline **and** the backup core reboots, the plugin will fail to initialize without a valid license on the backup core.

In short:

* Normal operation on the main core → ✅ single licensed works
* Failover to backup core (no reboot) → ✅ still works without backup license
* Backup core reboot while main core is down → ❌ backup license required


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## Do licenses expire or can they be transferred or refunded? 

Licenses are perpetual and non-revocable. Once a license is activated:

* ✅ It does not expire 
* ✅ It remains valid indefinitely on the activated Core 
* ❌ It cannot be transferred to another Core 
* ❌ It cannot be refunded

Because licenses are permanently tied to a specific system upon activation, please ensure that you are activating them on the correct Core before proceeding.


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## Can I get a demo license?

You do not need a demo license. 

All of our plugins are fully functional in emulation mode, allowing you to test and validate your design without any limitations. 

A license is only required when deploying the plugin on a physical Core.


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## If I need multiple instances of the same plugin in a single design, do I need multiple licenses?

No, a single license is sufficient. You can use as many instances of the same plugin as needed within a single design without requiring additional licenses.


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## Does the plugin require internet access?

No, the plugin does not require internet access to operate.

An internet connection is only needed when activating a license. This can be done using any computer or mobile device with the Core’s Locking ID.

For more information on how to activate a license, please refer to the [activation guide.](/doc/activation-portal-MCuyIlFv42)

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**Documents**

- [Frequently Asked Questions](https://docs.ad-da.ca/s/guide/doc/frequently-asked-questions-WYCxRgYzYg)
- [Activation Portal](https://docs.ad-da.ca/s/guide/doc/activation-portal-MCuyIlFv42)
- [Q-SYS Plugins](https://docs.ad-da.ca/s/guide/doc/q-sys-plugins-1ccQgVxaEF)