Unable to renew support, what then?

[PHolder]

Aha, I found my own answer in the FAQ in the menu under Sales & Registration (duh!)

@Jon

What happens if my subscription expires?

As above, if your subscription expires then Opus will keep working but you won't be able to install new versions. You can renew your subscription at any time, including after it's expired.

When renewing after expiration, you'll need to pay for the time you missed (capped at a maximum of one year), plus a minimum of one year ahead. So if your subscription expired 6 months ago, you would need to pay for at least 18 months subscription to renew for the next 12 months.