Cloudflare nameserver updated but domain not active

I added a domain to cloudflare and updated nameserver given by cloudflare with my domain registarer. It has been 2 days but cloudflare still showing "waiting for your registrar to propagate your new nameservers". It's showing domain status as Invalid nameservers.

I checked with dnschecker.org and it shows NS record changed in all places except 2 places till now. These are some queries that I have.

1. How much time cloudflare will take to mark domain status active?
2. How to post queries in cloudflare community bcz I don't find any link there after login?

Edit: The problem was nameserver updated in DNS but not in whois record. The reason was domain was locked and I have to unlock the domain. Now cloudflare marked domain active.