There is an issue where Custom GPT’s OAuth (External Account Linking) does not work on mobile apps.
It works fine on the web, but it does not work on mobile apps.
After clicking the “Sign in to” button on the ChatGPT APP to go to the web browser and logging in to the external account, when you return to the ChatGPT app, it fails as shown in the screenshot below.
This issue occurs on both iPhones and Android phones.
iOS APP version: 1.2025.031
AOS APP version: 1.2025.028
This issue occurs not only with the specific GPT currently in the Store, but also with the GPT I created for testing. Therefore, I believe it is not a problem with a specific Custom GPT, but with the ChatGPT APP.
I would appreciate it if the ChatGPT APP developer could help me solve this.
