Remove user_email from profile queries

Update devices.js

Refactor to use MySQL connection pool

Update count.js

Refactor MySQL connection handling with global instance

Update count.js

Refactor database connection handling in helpers

Update sync.js

Handle undefined parameters in database query

Refactor database connection and query handling

Refactor API handler and connection logic

Refactor sync.js for enhanced profile and invoice handling

Enhance SQL query with additional fields for update

Refactor token verification and device revocation logic

Update SQL query to include license_key and revoked fields