Exchange Online is not yet fully stable while Microsoft completes the recovery of MO1550821 / EX1550543. Microsoft reports improving service stability and is rolling out its recovery actions across the affected regions. This happens in phases, so some tenants will see normal service earlier than others.
During this recovery phase, ROGER365.io services that depend on Exchange Online can show degraded performance. For the Email touchpoint this means incoming emails can reach agents later than normal. Other features that read from or send through Exchange Online can respond slower than usual.