When someone entered a partner or promotion voucher after the campaign had
finished, your website told them the campaign was "paused right now" and
invited them to contact you if they thought it was a mistake. Nothing was
actually paused — the campaign had simply reached its end date — so clients
phoned the studio about an offer that was already over, and the wording
suggested you could switch it back on.

That message is now reserved for campaigns that really are paused or still in
draft, the two states you can switch back on yourself. A voucher for a campaign
that has ended or been cancelled now reads "This code expired on {date}", and a
voucher for a campaign that has not started yet reads "This code isn't active
yet. It can be used from {date}."

Nothing about who can redeem what has changed — only the explanation the client
sees. If you want the vouchers from a finished campaign to work again, extend
the campaign's end date in Promotions and they will start resolving normally.