I own a Oukitel WP15 since September 2021 when it first came out (www.oukitel.com).
Of all the android devices that I have, despite its large battery capacity, this is by far the most annoying device when it comes to Bitdefender & other apps.
It keeps 'repeatedly' turning off Bitdefender VPN & web protection.
***PLEASE DO NOT REPLY ON HOW TO TURN THEM BACK ON!!***
I already know how hence me using the word, 'repeatedly'.
I hope to find anyone who also uses this device and experiencing this same problem.