On “join_url” click zoom redirects registrant to webinar registration page

Description
We are creating Webinars with registration using the Zoom API with approval_type: 0. On registration of the attendees, we get the unique meeting join_url which includes the meeting id, registrant token and we send it to the registered user so that he can join the webinar with one click. Previously, the flow was working fine but in the past few days, we have faced the issue that when the attendee clicks the unique meeting link zoom is redirecting to the webinar registration page instead of opening the webinar. This issue seems quite random sometimes its works fine and some times not.

Error
The “join_url” sends a registered attendee back to the registration page where it seems like they have to register again.

Which App Type (OAuth / Chatbot / JWT / Webhook)?
JWT

Which Endpoint/s?
Using https://marketplace.zoom.us/docs/api-reference/zoom-api/webinars/webinarcreate and
https://marketplace.zoom.us/docs/api-reference/zoom-api/webinars/addbatchwebinarregistrants

How To Reproduce (If applicable)
Steps to reproduce the behavior:

  1. Create a webinar
  2. Register attendees through batch registration API
  3. On join_url it is redirecting to zoom webinar registration page

But not able to see a logical way to reproduce this as with the same exact flows most of the time everything is working fine but sometimes it redirects to registration page.

Screenshots (If applicable)
If applicable, add screenshots to help explain your problem.

Additional context
Even if the attendee fills in all the registration information and submit the button he is still facing the below mentioned confirmation message although our webinar approval_type is 0:
"your registration requested for this webinar has been submitted to the host for approval. You will receive an email regarding your registration status"

Hi @aiman.sajid,

Thanks for raising this. In order for our team to take a closer look, is it possible to share some of the unique join_urls that are taking you the user to the registration page instead of the webinar itself? You can share these with our team directly here.

Thanks,
Will