Resolved
We have finished our investigation on this issue and here are the findings:
Sectigo changed the CA-bundle provided to clients 30 days before the expiration of the root. The CA bundle present in our Load Balancer was not in proper order because of which our core applications could not validate it post the update of CA bundle we did in our systems.
We are closing this thread based on our findings, if you have questions please reach out to our Support Team and we will be happy to help you.
Posted June 3rd, 2020 11:40 am GMT 
Investigating
We are currently facing issues while accessing the Supersite. You may encounter the error message “503 Service Unavailable”.
Our System Administration team has been alerted of this issue and is already working towards resolving it at the earliest.
We regret the inconvenience caused to you and shall continue to post updates regarding the issue here at regular intervals.
Your patience and cooperation are highly appreciated.
Posted June 2nd, 2020 11:41 am GMT
Affected Services
- OrderBox