Gumtree Security !?!

The initial part is not Gumtree's fault, but their lack of action is. My ad for item selling for £350 just attracted time wasters. Not one genuine buyer.
The person in question told me they had cancer, upon searching Google it's a known scam. I feel strongly about someone lying about that in order to scam another... but on Gumtree you cannot leave any written feedback, so i'll do it here and try selling my item elsewhere now.
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22-Mar-21
Thanks for the reply Gumtree
I am well aware of how to keep safe on the internet. Some of the issue here is that despite the person having lots of negative feedback, in no way can you inform others that this account is run by a scammer, there is no free text option to do so. Their account remains active on your platform.
Giving your customers the ability to feedback on such an experience in an appropriate manner would be good, along with the ability to easily report and block such an account. Something Gumtree should consider to 'clean up' its market place
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5-April-21
So despite an email to me from Gumtree stating "I've escalated all info I'm happy to confirm that appropriate action has been taken on this user's account. on the 22nd March" people are still falling foul of this scammer.
As of today, I can see that 6 sellers have fallen foul of this account 5 days ago, with 12 more 6 days ago. So on the the 31st March & 1st April, some 9 & 10 days after Gumtree stated the above. From what I see, the account is still active. How can anyone ever have any faith in Gumtree security ?