Perhaps not; unlike the previous CCleaner versions CCleaner7 no longer tells you on the interface if it’s Free or Professional.
So even though it doesn’t say ‘Professional’ at the top it may still be activated as Professional.
You will need to check in Settings > ‘My Subscription’ to check if it is active as Free or active as Professional.
If it isn’t Pro and you have a valid key then simply enter your key again:
See this for how to check and re-activate if needed: