Some server issues may affect replays depending on the root cause.
There was one issue during the night that occurred between 00:00 - 03:00 UTC causing connectivity issues towards what is perceived as the “Global Server”.
Then I can see that Expert auto-rebooted 90 minutes ago. This is recurring issue (occurs every few days) that is being investigated. Most of the time you reconnect but it may cause issues with replays unfortunately.