[BUG] Fix the backend for recurring notifications and birthday notifications

[avayedawadi]

Context

• Currently sending the one time notification works properly, but the recurring and birthday notifications do not.
• For the recurring notification, just do a polling solution don't worry about setting up a CRON job or something like that.
  • Reach out if you need help with this
• Check the user model to make sure the birthday is properly saved.

Requirements

• Fix the issue, reach out if you need more help

Acceptance Criteria

• Fix the issue