Need to enter authenticator after every disconnect

The game disconnects a lot, either because of some technical issue or because of strict anti-AFK policy, that’s not the point though.

The problem is that every time after disconnect I need to enter authenticator code, which takes a while since I have to get my phone out and open the app. Closing the game and starting it again avoids authenticator, but it’s also painfully slow.

In comparison, WoW does not require authenticator code when you disconnect or log out. Is there a setting in D3 or something I can change?

On your Battlenet launcher, click the blue Blizzard logo top left and from the menu choose Settings, General, Security Settings, and tick the boxes for Remember emails and phone numbers and Keep me logged in

It’s already checked, doesn’t help. I don’t have this problem in WoW, only D3.