it shows only a window which the title is "update" and the message is "Network error. Please check your network and try again.(70254639)" and there is two buttons : retry and help
To begin with, please try to reset the settings of your device and restart your device. You can reset your device settings through Settings > General management > Reset > Reset all settings, @saeed moghtader.
If the issue still persists, please try to change the DNS settings by following these steps for Android and see if it helps.
because if I use vpn I can connect but I still don't go in the game which means I bypass the blocking by my country and it us pubg fault , anyway don't give shit anymore if I have to access this game in a difficult way