AWS Route 53 Not Using Cloudflare NS records - Continuation

I registered on Route53 and I have one NX record set by AWS for ‘’ with 4 strings,

Screenshot 2020-10-08 at 20.12.13

I tried to put the 2 strings provided by Cloudfare in remplacement of those 4 strings as per the example given in the same entry, as Cloudfare says ‘replace’:

Screenshot 2020-10-08 at 20.10.28

After waiting a few days, still nothing. Now do I have to create a NS record for ‘’ instead and put the 2 strings provided by Cloudfare?

Screenshot 2020-10-08 at 22.06.31
This is not however what Cloudfare explains.