problem with change custom field

Hello!

We made confirmation of the number by SMS according to your instructions (https://www.wundermatics.com/2020/05/11/woocommerce-phone-verification-with-sms/). it works on the demo stand, but does not work on production.

We noticed a strange behavior: the confirmation takes place when you are logged in as an admin.

There are no errors in the logs. I ask for help