Custom actions stopped working with GPT-5.5

Hi Team

Again, the custom gpts have stopped connecting to my webhook, i think the issue is with GPT 5.5 as some users from previous gpt or older chat can still connect to my webhook, can you please check or adivse, this issue has happened every time whenever their is a version upgrade post implementation of GPT 5. Kindly check and advise.

Regards,

Madhur

@OpenAI_Support

We are also experiencing frequent issues.
This lack of stability is a very serious problem.

I would like you to investigate this urgently.
Also, if there are any alternative solutions or workarounds, please let us know.

Is the quality and stability better when using the ChatGPT apps?

We are reaching the limit of what we can tolerate, so I would appreciate it if you could share the best approach or recommended methodology.

I’m experiencing a similar issue with MyGPT; it’s not calling the Authflow, preventing user verification. After much investigation, it seems the problem started with the app update on May 25th, and only on Android mobile devices. I’ve opened a support ticket, but haven’t received a solution.

Hey, Thanks for raising this issue. can you please share with us a HAR file in the request you have submitted with us. Please also share the case id/case subject with us here so we can track your request. Thank you!