I created an automated system where responders from google sheets get emails. Although, the automated system doesnt seem to be working

I created an automated system where google form responses are recorded in the google sheets and from there responders should get an email from my Gmail module . Here an example of how my automation is : Google sheets (Watch new rows) → router —> Gmail (Send an email). There are around 7 gmail modules with filters. whenever a new response is added to Google Sheets 15 mins later responders do not get an email. Instead when I try to manually run the system by pressing run only a small bubble shows up on Google Sheets and nothing else happens no errors show up either. What should i do?