If you’re seeing this error after entering your licence key:

Try the following steps:

1. Navigate to Plugins in your WordPress admin.
2. Deactivate the Idomit plugin.
3. Reactivate the plugin again.
4. The issue should now be resolved, without needing to enter your licence key again.

If you are still seeing this error, raise a ticket here : https://store.idomit.com/support/