After the license is parked, the web UI shows a singular license expired page. Essentially, the app is entirely disabled and monitoring will be offline.
ipMonitor 8.x has a concept fairly unique called Emergency Licensing that can help get you there part way. I would like you to log into the old version of the support portal and examine the emergency licensing text on this page.
You should have at least two emergency licenses, each good for 7 days. That's 2/3 the way there. If you had two or more licenses of ipMonitor, you'd be golden.