Why is my app discontinued on the App Store and cannot be found or downloaded by my customers?

Your Apple developer account may have expired without its annual fee renewed. Before an account expires, Apple sends an official email to notify the account owner. Check whether you have received such an email in the mailbox used for registering your Apple developer account. If your account expires, renew your account. Alternatively, contact Apple customer service personnel. Tuya cannot locate the specific causes for third-party platforms.