Renaming a 3rd level domain - *.bitrix24.*, for example, from example.bitrix24.com to test.bitrix24.com, is possible only for Standard, Professional and Enterprise plan users (uncluding Standard and Professional archived plans).
To change the domain, the Bitrix24 administrator should create a request to technical support and specify the name of the old domain and the name of a new one.
Please note: after changing the domain, the following services will stop working:
- Open Channels - they should be reconnected after migration.
- All widgets on websites (Online Chat, CRM forms, callback) - they should be reinstalled.
- Application webhooks - they will need to be recreated.