The same problem just occured to me and another player. We grouped up to do badges first few badges were going smooth. Then he didn’t get one while I did. We did it with only me getting rewards.
We decided to continue doing badges with the next one resulting in no quest entry, just the white text pop up after using. The objective spawned but neither of us can use it.
Server: Klaipeda
Teamname: cherysh and Tohkaa
Character Name: Cheryl and Rasphia
Date: 26.04.2018, around 1PM ST
EDIT: uploaded a video