If you wish to request a refund for Premium plan purchased on Aloha Profile account, please contact us directly at support@alohabrowser.com, and we will assist you in the matter.
If you are App Store subscriber, here are instructions on how to request your refund: https://support.apple.com/en-us/118223
If you are Play Store subscriber, here are instructions on how to request a refund: https://support.google.com/googleplay/workflow/9813244?hl=en