General Steps for Diagnosing Calendar Issues

Most calendar problems — no matter how they show up on the surface — trace back to one of a small handful of root causes. Working through them in a consistent order saves time versus guessing.

A general diagnostic order

1. Reproduce the issue as a real customer would. Open the live booking page or widget in a private browser window and go through the actual flow, rather than only checking settings screens.
2. Check the calendar's own settings — working hours, staff assignment, buffers, minimum notice, and booking window limits. These four settings combined explain the large majority of "wrong availability" complaints.
3. Check external calendar connections — a disconnected, expired, or unauthorized integration is one of the most common root causes of both sync failures and unexpected availability.
4. Check timezone alignment across the account, the calendar, and the individual staff member — mismatches here look like a dozen different symptoms but share one cause.
5. Check notification and confirmation settings separately from availability — these are configured independently and a broken notification doesn't mean a broken booking, or vice versa.

Use built-in diagnostic tools

Where a troubleshooting or diagnostic tool is available for a calendar, use it before manually checking every setting by hand — it typically surfaces the exact reason a slot is blocked or a conflict exists, which is faster than reconstructing the logic yourself.

Isolate before you fix

Change one setting at a time and re-test with a real booking attempt before changing anything else. Adjusting multiple settings simultaneously makes it much harder to know which change actually fixed the problem — and easier to introduce a new one.

Good to know: Keep a simple log of what you changed and when, especially for issues that come and go — a pattern tied to a specific day or time often points to an external cause like a token expiration cycle rather than the calendar configuration itself.