Ssl error on subdomain

Hey, I am trying to connect a subdomain I created on Vercel to notion. I followed their instructions regarding the CNAME and TXT creation in your services. I used several online tools to check propagation and everything seems fine, but when I try to go my domain (formation.cawastudio.com) I get the following error : ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Notion on his side seems unable te reach the subdomain, but I guess it is normal regarding the error.

I tried looking for a solution, it appears to be a ssl certificate problem, but I cannot update anything on add anything on the vercel side.

Any clue on how to solve this please ?

Hi, and welcome @tonytiratay!

Appreciate your patience here. :smile:

Just to make sure I understand correctly:

  • You bought a domain with us cawastudio.com
  • You’re trying to connect the domain to use as a Notion site

Is that right? The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error is related to SSL certificate problems.

Could you check your Domain settings > SSL Certificates in the Vercel dashboard? Is there a value there?

Sharing this relevant documentation in case it’s helpful.

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