Got it, let's tackle this article about Telegram account deactivation. First, I need to make sure it's 600-900 words, uses the required phrases naturally, has proper headings, no AI mention, only the allowed HTML tags. First, start with an h2 main heading: "How to Deactivate or Temporarily Delete Your Telegram Account" that's the main keyword. Then an intro paragraph explaining why someone might want to do this, like taking a break, privacy concerns, switching apps, right? Mention that it's reversible if done within a certain time, that's a factual point, no unsupported claims. Next, h2 section: "Key Things to Know Before Deactivating Your Telegram Account" that's useful, people need to know prerequisites. List things like: you need access to the phone number linked to the account, deactivation is temporary for 6 months (wait, is that right? Yeah, Telegram lets you reactivate within 6 months by logging back in, after that it's permanent. Also, your messages, groups, channels you're admin of? Wait no, if you deactivate, your groups you're admin of will have a new admin assigned? Wait no, better to state factual: deactivation pauses your account for 6 months, during which you can reactivate anytime by logging in with your phone number. After 6 months, all account data including chats, contacts, and media is permanently deleted. Also, if you're an admin of groups or channels, you'll lose admin access immediately upon deactivation, and group owners will need to assign a new admin. Oh right, that's factual, no unsupported claims. Also, you don't need to uninstall the app first, that's a common myth. That's good for that section. Then next h2: "How to Deactivate Your Telegram Account via the Official Website" that's one method, use the "Here's how you can" phrase here. Let's outline the steps: first, go to the official Telegram deactivation page, which is my.telegram.org/deactivate? Wait, yeah, that's the correct URL. Then, enter the phone number linked to your account, make sure to include the country code, no + sign? Wait, Telegram says enter the number without the +, right? Then, you'll get a confirmation code sent to that number via Telegram, not SMS? Wait, no, wait: if you're logged in on another device, you get the code there, if not, you get an SMS? Wait, better to state accurately: After entering your phone number, Telegram will send a confirmation code to your linked device (if you're logged in on another phone, tablet, or desktop) or via SMS to your phone number. Then enter that code, then you'll be asked to confirm why you're deactivating, optional, then click "Done" or "Confirm Deactivation". Wait, also mention that if you can't access the linked number, you can't deactivate, that's a factual point. Also, note that this method works on any device, no need to have the Telegram app installed, just a web browser. That's good. Then next h2: "How to Temporarily Delete Your Telegram Account via the App Settings" that's the second method, use "Learn two ways to" earlier? Wait, maybe in the intro mention that there are two primary methods, one via web, one via the app. Oh right, the context has "Learn two ways to" so I can work that in. Let's see: in the intro, say "If you’re looking to take a break from the platform or address privacy concerns, learn two ways to deactivate your Telegram account quickly, either via the official website or directly in the app settings." Perfect, that uses the required phrase. Then the app method steps: first, open the Telegram app on your Android or iOS device. Go to Settings (the gear icon, usually in the top right for Android, bottom right for iOS? Wait, better to say "Open the Telegram app on your mobile device, then tap the menu icon (three horizontal lines) in the top left corner, then select Settings." Then, scroll down to the "Advanced" section, tap on "Delete Account". Wait, is that right? Let me confirm: yes, on Telegram, Settings > Advanced > Delete