I still don't understand why I bought it when I get the same things in free version of calendly.
I didn't get actually what it meant to offer.

1. It keeps the branding.
2. It doesn't offer the option for visitor to choose the mode or the way they want to connect unlike Calendly. You need to share different link for each type of booking e.g. if one wants to connect in online meet link will be different, if one wants book a call link will be different, if one wants to schedule in-person meeting link will be different. Its a manual work to ask other party how do you want to meet and then share the link accordingly.
3. Another issue is, meeting can be booked only with 1 email address. Once the booking is complete, there is an option to add other attendees which most of the time makes user miss the option to add other attendees but one can see confirmation message and move on. Then the invitation needs to be sent to other attendees manually.
4. They are very slow in their roadmap development. They never thought of having the tool from users' point of view. Just added auto reminder which isn't the only thing I trusted tidycal for. It seemed that they don't listen to negative feedback and work on the solution.
5. Max 2 reminders can be sent. There should be an option to send few more reminders atleast 1 more.

Many other issues you will understand as you start using TidyCal.