The online components of MYOB AE/AO are affected by the retirement of TLS 1.0 security protocol.
Refer to the release notes and KB 31916313 to see if it affects you.
Before 30 September 2018 you must:
Contact Support if you have any queries.
AE/AO Tax 2018.0a, AE Tax 6.46 SP1, AE Tax 8.30 SP1
Headlines:
Check out the release notes.
Reference: MYOB Release and Support Bulletin, 16 Aug 2018
If you have a question or would like to book in for a consultation, please don't hesitate to reach out.