I also noticed that it doesn't work. Sometime on October 22, I had the last notifications about transactions. There were interruptions before, but I somehow related them to the heavy load on the network at that moment. Now it seems to be completely offline because the menu is no longer functional either.
I don't even know who made this bot, is it someone from Bitcointalk at all? I assume that some alternative will appear.

Not sure which bot you're talking about, but if all you want is to get notified when a transaction gets confirmed, I have my own.

[Telegram Bot] Bitcoin Fees - fees and tx tracker

https://t.me/BitcoinFeesAlert_bot

Command: /tx HASH

It is a telegram bot (@tracktxbot) that will notify its subscribers if their registered wallet address (btc, doge, eth, bnb, etc.) has a transaction both send and receive. I did tried the bot but it's not working anymore probably it was abandoned or whatever.

That will be much better I'm thinking to create one earlier but you're ahead of me since you created the @BitcoinFeesAlert_bot already.

What coins will you add for notification for this is it focus on bitcoin only or with other cryptos as well?

that would definitely be a very successful update and then you would have one telegram bot for all options/functions and not have others running at the same time
please keep us updated

Aside from waiting to Tryninja's reply you can also check if there is an update to the development of the bot by checking Tryninja bot's ann thread for this feature to be added soon. So far it wasn't added yet.

https://bt.irlbtc.com/view/5445635.0