...
According to Article 17 GDPR, the user (data subject) shall have the right to obtain his/her data or have them erased and forgotten. In WP - SMS OTP Login - by SMS.to plugin you can export the user's data or erase his/her data in the case she/he asks. For more information, read Article 17 GDPR
To export a user data based on mobile phone, please enter the mobile phone in User’s Mobile Number field and select Export
3. To delete a user data based on mobile phone, please enter the mobile phone in Erase Users Data Mobile Number field and select Delete. This action can not be undone
...