In most cases, this occurs because the App title or Short name you entered does not comply with Telegram’s input rules. However, VPN usage, ad blockers, browser conflicts, or account issues (like unverified or restricted accounts) can also cause this error. The good news is that these problems are easy to fix. This guide will walk you through the most effective solutions to successfully register your application.
Before You Begin
Before applying the fixes, make sure to check these important points:
App Title: Must not exceed 64 characters. Avoid using reserved words like telegram or adding @, #, or other symbols.Short Name: Only lowercase letters and numbers are allowed, with a length between 5–32 characters. No spaces or hyphens.Account Status: Ensure your Telegram account is verified and not restricted or banned.Browser: Use an updated browser (preferably Chrome or Firefox). If possible, try using Incognito/Private mode to avoid extension conflicts.Cache: Clear your browser cache and cookies before attempting again.
1. Ensure You Enter a Valid App Title and Short Name
An incorrect App title or Short name can trigger a syntax validation error, causing Telegram’s backend to reject the registration request. The App title must not include reserved words like telegram, nor should it contain spaces or special symbols such as @ or #. Keep it under 64 characters. For the Short name, only lowercase alphabets and numbers are allowed. It must be between 5–32 characters long. Avoid using special characters like hyphens or underscores. By following these input rules, you can prevent your registration request from being rejected.
2. Disable VPN and Ad Blockers
VPNs change your network IP address, which may trigger Telegram’s security protocols. If your IP address does not match your account’s registered region, Telegram can block the request. Additionally, Ad blockers can block critical web scripts and authentication tokens, leading to submission failures. Here’s how to disable them:
For Proton VPN and Chrome
