The admin can set the OTP validation time limit between 60 seconds to 5 minutes using Mobile OTP Login and Order SMS Notifications Extension for Magento 2.

Read this guide on How to Configure Mobile OTP Login and Order SMS Notifications to Magento 2 to setup this extension.

Here are the few more resource to help you get most out of this Magento 2 Mobile OTP Login and Order SMS Notifications Extension.

• How to Allow Login via Mobile Number OTP in Magento 2?
• How to Verify Customers Identity with Magento 2 Mobile OTP Login Extension
• What are SMS Order Notifications for eCommerce? What are it’s Benefits?
• How to Set New Order SMS Notification in Magento 2