@Chaika Hey! I dont know if you remember, but you helped me with serving wildcard SSL certs on custom domains for customers a few weeks ago. I've recently been having an issue where if you constantly reload the custom domain site without cache (ctrl + shift + r), then there's ~50% chance for an "Invalid SSL Cert" error. Do you have any idea why this could be happening? I can DM you the website that this happens with if needed.