As long as you have already purchased Hype on your original ID, you won't be charged again. Click Upgrade > Restore purchases to get Hype Pro enabled again.
I'm sorry you're hitting this issue.
Could you please make sure you have all available Mac OS updates? If that doesn't resolve the issue, could you please submit an issue from within Hype, using Help > Report an Issue? Please ensure that the "Send logs, preferences, and system information" checkbox is checked. This will help us determine why the record button is not working correctly.