The affected services have been restored, and are now back online.
Update - Cloudflare has indicated they have identified the issue. We are awaiting confirmation as to when service will be restored to the services affecting our integration. We appreciate your continued patience while this issue is resolved. Please do not hesitate to reach out to our Support team if you have questions.
Cloudflare has their own status page open here: https://www.cloudflarestatus.com/incidents/25r9t0vz99rp
The web app, APIs, and processing are all unaffected.
We are experiencing some technical difficulties with certain services; the team are taking a closer look now...