Hi @gpiotrowskijjit
Thanks for reaching out.
Did you wait a few minutes for the DNS to propagate? Sometimes takes time when you point(add) the IP address to your A DNS record and domain, depending on your DNS vendor.
I'd suggest to try to verify your domain in this format: scim.example.com
The rate-limit errors are due to Let's Encrypt rate limiting you due to the several requests sent to try to validate the domain used for your SCIM bridge. Because of this rate limit enforced on the subdomain, there are two possible ways to fix it:
Wait out the rate limit for Let's Encrypt to offer your domain the TLS certificate. The waiting time is about a week until LetsEncrypt has reset the limit restriction.
Or reconfigure a new IP and change your DNS A entry to have a new domain pointed to the new IP.
This will enable Let's Encrypt to see a completely new domain and new IP to supply a new TLS certificate.
Let us know how that goes.