# Domain Migration – Octa Bills
Octa Bills API domain is changing from
If you are using Octa Bills version 5.4.1 or older, some features of Octa Bills will stop working after 25/09/2021.
# What will stop working?
- Deactivation of Octa Bills subscription will stop working.
- All e-invoicing APIs, including generation of e-invoice will stop working.
- Support email address
firstname.lastname@example.org stop working.
To clarify, offline (e-invoice JSON file) and direct (NIC API integration) mode of e-invoice generation will not be affected.
# What should I do?
- Please update our support email address in your address book:
- Please upgrade to the latest version of Octa Bills.
|Standard||Update Octa Bills||Download|
|Professional||Update both Client and Server||Download Client|
|Premium||Update both Client and Server||Download Client|
Use new support email address
# I need help!
Sure! Contact us on WhatsApp/phone (+91-82093-27184) or email (email@example.com) if you need any assistance.