Squarespace DNS to OVH

Hi,

Let me explain the situation, my client has two domains on Squarespace but he just bought a hosting plan on OVH. 

I have to update the DNS on the Squarespace’s domains to redirect them to OVH and import them as external domains on OVH too. So yesterday I added custom records in DNS settings and remove the Squarespace defaults presets for each domain, as you can see on the screen. Should I do something else?!

Now I have this error on my browser -> DNS_PROBE_FINISHED_NXDOMAIN and when I test the DNS, the domains are still linked with Squarespace. 

Someone already had this problem? Can it be only a propagation delay?

Thanks.