I believe all TryNinja services are currently offline—I'm not sure if it's due to updates or because work is being done to implement something new. The Telegram bot, the Simplex one, the Ninjastic site, and even the other beta versions are all returning errors. Most of them are showing a 500 Internal Server Error, which typically indicates a server-side problem that prevents the request from being fulfilled.

As soon as TryNinja is back online, I’m sure they’ll update us on the situation through the forum. Just like you, I’ve lost access to several topics I was interested in without the bot.