3rd party survey toggle disappeared

Hello,

This  feature still exists. Check and make sure it is enabled at the account level. 

How to enable meeting surveys

Account
To enable or disable Meeting Survey for all users in the account:

Sign in to the Zoom web portal.
Click Account Management then Account Settings.
Click the Meeting tab.
Under In Meeting (Basic), click the Meeting Survey toggle to enable or disable it.
If a verification dialog displays, click Enable or Disable to verify the change.

(Optional) Select or deselect the Allow host to use a 3rd-party survey link check box to enable or disable the use of third-party survey links for meetings at the account level.

Click Save to confirm your changes.
(Optional) Click the checkbox next to Use default survey if you want to set a default survey for all scheduled meetings and webinars, except those with Personal Meeting IDs.
Use the drop down menu to select any survey from the account library.
(Optional) Select an option under Who can participate:
Everyone in the meeting
Internal users only
External users only
(Optional) To prevent all users in your account from changing these settings, click the lock icon , and then click Lock to confirm.

https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0067657 

Regards

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