For anyone who ends up here in the future, the solution is simple: I switched to a mobile hotspot, and it worked. I was using Wi-Fi and kept getting that error, but I found a comment from another developer suggesting to switch networks. You don’t need to change your browser or device, just change the network. Good luck!

certificates are very painful for new developer apple you should keep a Youtube channel for iOS development and make a video on this strange thing we are new developer no one is teach me about certificate i can not find best tutorial about and i am lot's of worries i am not able to tolerate this type of pain