I understand that it needs a higher version of php to sync

I understand that it needs a higher version of php to sync automatically and my server does not meet those.

1. I bought this plugin mainly for its ability to sync to my calendars. I am not sure how I can sync it to block unavailable time from my google calendar?

2. Also how can I get it to send me notification when somebody requests an appointment?

3. Can I get it to randomly block 20 or 30% of my time?