I was able to boost one eternal character on my account in kyovashad but I was not able to boost a second character even though I had already purchased the vessel of hatred expansion.
Update on my experience with this issue. I have been in contact with several Game Masters, over the last week, via a support ticket for this issue. I was continuously told that “Diablo IV only allows one character boost per account.” I have the Vessel of Hatred expansion, and both online Battle.net news, and in-game content state that Vessel of Hatred players should receive 2 boosts for Eternal Realm characters.
Just about to bash my head in a wall for the seeming lack of ability of the tech support team/Game Masters to actually read and understand the situation, look up the details of my account, view the attachments I sent in support of 2 boosts, etc. (it honestly felt like they were gaslighting me), one of the GMs suggested that I file a bug report. Since it appears that Blizzard’s preferred way to receive bug reports is via forum posts, here we are. I have screenshots of the in-game content that proves that Vessel of Hatred players should be getting 2 character boosts for Eternal Realm characters (non-hardcore), but could not figure out how to attach files to this post.
Does anybody still play Eternal Realm?
It finally worked for me. I found out the issue is that this boost was only available after talking with Lorath at the stables.