Support
Email us at yitsolutions2020@gmail.com. We usually reply within 2 working days.
Please include your phone model, OS version and app version so we can help faster.
Common issues
Restore a Remove Ads purchase
Open the app and use the restore purchase option, signed in with the same Apple ID or Google account used to buy. Purchases made with a different account cannot be restored.
Purchase failed or I was charged but ads still show
Close and reopen the app, then restore the purchase. If ads still show, email us with your order number from Apple or Google.
I found a wrong question or answer
Email us the chapter, the question text and what you think is wrong. We will check and fix it in the next update.
How do I switch language?
Change the language in the app settings. Questions, answers and explanations switch between English and Traditional Chinese.
My test history or bookmarks are missing
They are stored on your device. Deleting the app or switching phones clears them. Please contact us if they disappear without either.