If Chillframe is asking you to reconnect your channel, the permission you gave it for YouTube has expired, or it was removed from your Google account. You'll see a Reconnect needed badge on the channel and a YouTube disconnected alert on your Series, and we email you as well. Publishing stops until you reconnect, but nothing is lost. Videos that already rendered are safe in your Library, and what's already on YouTube is untouched.
Go to Settings → Channels.
Click Reconnect on the channel.
Confirm with Google, and pick the same channel you connected before.
The badge changes from Reconnect needed to Connected, and your Series post again from their next posting time. Chillframe checks the channel when it starts building each Series post, up to two hours before that post is due. Reconnect before that and the post goes out as normal. Reconnect after it and the slot is skipped rather than posted late, the Series carries on from its next posting day, and you get a notification saying the channel needs reconnecting.
A video you scheduled yourself doesn't go out on its own once you're back. It fails at its scheduled time and waits for you, with Try publishing again in the publish window, so open the video and publish it after you reconnect. If reconnecting doesn't stick, email [email protected] and a human will read it.