Are Mobile Security and BD VPN supposed to run at the same time? When I scan my device, I get an error if either option is enabled while the other option is disabled. Enabling VPN turns off MS.
Mobile Security and BD VPN will not run at the same time because MS already has a VPN built-in. This confused me also.
Take a look at the article below for a more detailed explanation about this: https://www.bitdefender.com/consumer/support/answer/34181/. 
Thank you. One would think the BD Mobil app would recognize the conflict and only give a recommendation for the best protection.