No feature to modify the Telegram that’s linked to the app
Response from developer
Thank you for sharing your feedback, and we're truly sorry for the frustration you've experienced. We understand how important it is to have control over your account settings, and we’re actively working on adding the ability to disconnect and update your Telegram directly through the website, so you won’t need to reach out to customer support in the future. We genuinely appreciate your patience as we work on this improvement, and we’re committed to resolving this as soon as possible. Please feel free to reach out if you need further assistance in the meantime, and we’ll do our best to support you.