Integrates with Zoho Books

Database connection errors (max_user_connections exceeded) took down our
live store for hours. Developer responded saying it was "fully fixed" and
a "temporary server issue."

Checked after their response - SAME ERROR STILL VISIBLE.

Either the fix wasn't actually applied, or this is a recurring problem
they're not being honest about. A "temporary server issue" doesn't cause
max_user_connections errors - that's poor connection pooling in their code.

Not acceptable for production use.