Rescue bug? [Rita after 60x tries]

I've been trying to rescue Rita and the banner says it is guaranteed to obtain her after 60+ tries, for my surprise after I reached those tries the character that appeared was Renoa 🫠… am I missing something or this “100 % chance after x tries” is not what it looks like ? Please admins would you be able to change it and give me Rita after checking my “rescue logs”???