TLS certificate still pending even though domain and nameservers correct in route 53

Hello,

I am trying to obtain a valid tls certificate through ACM, however, the certificate is still pending. I registered my domain (let's use example.com as the example) in Route 53, and the 4 name servers under route 53 > registered domains > example.com > hosted zone details matches the 4 name servers in my hosted zone under route 53 > hosted zone > example.com - under the NS record. Also, I have 3 other records under r 53 > hosted zone > example.com, them being an A record which routes to my s3 bucket, an SOA record which routes to the first name server of the NS record, and a CNAME record with 'record name' of 'www.example.com' and routing to 'example.com'.

I transferred this domain from another host a month ago, and aws support told me yesterday that the name servers hadn't transferred over correctly, so yesterday I fixed the name servers in route 53 > registered domains > example.com > hosted zone details to the name servers that were within r 53 > hosted zone > example.com - under the NS record. Also, I don't think it took 48 hours for the dns settings to update because they are already updated under route 53 > registered domains > example.com > hosted zone details.

So domain and name servers are all correct, and the aws documentation here says that if all checks out it should take 30 min max to issue a valid certificate. However, it has been almost 24 hours and the certificate for example.com is still pending