Lord Vader tier 6 fails

Product: Star Wars: Galaxy of Heroes
Platform:Apple iPhone
What type of device are you experiencing the issue with? iPhone XR
OS Version iOS 17.3.1
Ally Code: (Find it here: http://bit.ly/AllyCode ) 746387116
What type of issue do you have? Gameplay
How often does the bug occur? Every time (100%)
Summarize your bug Lord Vader tier 6 does not work. Ultimate ability was never available.
Steps: How can we find the bug ourselves?
Connection Type Wifi
Please select your region North America
Country USA

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I was never able to activate the ultimate ability to complete the round. Had to forfeit eventually, but lost the dark side currency anyway. ☹️