The Inject node conditions are unclear. When you select repeat at a specific time, a “?” box appears which is simply blank. Unclear what you type in! 12 hour format or 24 hour format? Do you say “am” and “pm”? Can you input seconds? It’s unreliable because of this, and the documentation says nothing about this at all.
It seems 24 hour time format works-- I’ll put in a feature request to make this more clear.
Keep in mind this is not HA software.
You need to request this at Node red.