This could happen if you initially subscribed from one platform and then accidentally subscribed to another because you've used a different account/email address.
For example, you started in iOS and also decided to use the Speechify Chrome Web Extension. If you logged in using the same credentials, it will detect your existing Premium plan. But if you accidentally logged in using a different credential, this creates a new account, and you could be prompted to start the premium trial in Chrome.
Please check this article to learn more about how to cancel your subscription from each platform.
If you still have any questions about multiple subscriptions on the app, please reach out to us via email at [email protected].