Maintenance notification over Telegram stopped working

I have scheduled maintenance for filling Adblue every 5000 km of total distance. In previous versions came normally notification to telegram, but in last version can't receive notification to telegram anymore.

1. Is the event generated in the system?
2. Have you checked other notification channels?
3. Do other notifications work over the same Telegram config?

I think, I found solution. I deleted old notification schedule in maintenance, made in previous versions of traccar server and created new with this last version and now it works