He probably wanted to fuse an extra epic, but didn't know he couldn't if he fused Haggibah first.

That makes sense.  Honestly couldnt have told you her name. 

Hello. I collected 4 Xanthe, but I forget to summon Haggibah... Help 😭😭😭 

i

sumbit a ticket through the in-game support link

I did it the moment I realized my mistake. I logged into the game, clicked the support link, described the issue, provided my email address, and attached a screenshot. However, three days have passed and I still haven't received any email notification, which is really worrying me. 

Welcome to the world of almost non existant game support.