Sendgrid not receiving anything at production level

Just created and tested an email blaster using sendgrid.
Everything works perfectly locally but when I try to test using a production build but nothing gets sent to SendGrid.
I tried the fixes to similar problems I found on this forum.

Hi @jeffreyyi11

Do you receive any errors? Are you logging to the console to see what is happening when the script runs?
Do you have some function code you can share, or a git repository?