Not voiceover accessible. You are breaking the law. – Google Assistant Review

The American with disabilities act says that you have to offer any services that you offer to the general public to any users that might need an accommodation because of the disability. Because you did not and have not added VoiceOver support, visually impaired or blind users are not able to use this application and any of them could sue you for it...
Review by Reece O'Bryan on Google Assistant.