Hi @mikkokutilainen @Mohamed_Mamdouh , we encountered the same issue.
You may be able to go in and manually add openid after the initial registration, but this is sometimes tricky with the timing. Another solution is to manually create the client in Clerk with openid and the other fields included, and then add the Oauth client ID and Oauth client secret manually when creating the App in ChatGPT (screenshot attached).
Let me know if either of these work for you, or if you find a more reliable way to get openid working with DCR.
