Hello Shira,

Thank you for reaching out to us.

1. An issue with email notifications could be caused by several reasons:

1. Your hosting provider is blocking all 3rd party settings and only allowing their SMTP (or other) settings.
2. Your website has a PHP version of less than 7.
3. The credentials are not correct.
4. There's something else blocking the notifications from being sent.
5. If you're using Gmail, please check out this article for detailed setup instructions.

Please check these points, and let me know if you were able to resolve the issue. If you're still not able to resolve the issue, we'll need to remote into your website, and see what's going on.

2. As for booking please check your employee working hours and days, days off, special days, as well availability to book in advance - Period available for booking in advance - in general settings.

Hope this helps.