Whatsapp in BlueStacks is not need it now, you can uninstall if you wanna, this is secure and better remove of bluestacks.
I have a question; why do you use Bluestacks App Player???
When I got the verification code from Bluestacks App Player, WhatsApp on Nexus 7 asked again a telephone number for verification!!!
If I use the call verification, WhatsApp on Nexus 7 answer me that I must wait 50 minutes for another call verification (due to the one with Bluestacks)...
Then, after 50 minutes, I did the call verification directly on Nexus 7...
1) I installed WhatsApp 2.8.7326 version from provided link, secured it with App Guard by removing the access at phone status and identity and then I launched WhatsApp.
2) At the verification I used my telephone number (home, office, it's not obligatory to use cellular number) and when the SMS verification has failed I asked for call verification directly on my tablet. Then I used the code provided!
Is Bluestacks App Player really necessary???