There appears to be an outage - localized, but spreading - of the Clover backend processing system. We will advise as we learn more.
According to our logging and what we are hearing from customers, the issue has stopped occurring. Clover has stated that the issue was a temporary increase in synchronization latency - which they are looking into further. We are closing this incident. If you have further issues, please follow your standard reporting and support escalation procedures.
Clover has updated their status page to say the issue is resolved. We are still monitoring and checking with clients to ensure they are no longer seeing issues.
Some areas have recovered and we are seeing successful credit card transaction rates increase again. Clover says they believe it is resolved, but we are still waiting on details so far as cause, etc.
Clover has acknowledged an issue on their side and is investigating. They have "pulled in additional engineering teams to help investigate".