Resuming this would put you over your plan's connection limit.
A paused connection stops counting against your plan's pool - resuming spends a slot again, and there wasn't a free one when you tried. Pause or delete another connection first, or upgrade.
Pause or delete another connection to free up a slot.
Or upgrade your plan for more connection slots.
Try resuming this connection again.
Still stuck? Send AVX-3021 to hello@theavoxai.com along with what you were doing when it happened.