Hi Nikolas, Thank you for your respond last time for the question of time zone, we have fixed it according to your suggestion. Now we have purchased the Connect function, and successfully synced, however we found the appointment appears 7 hours earlier on Google Calendar. I have set the time zone on both Google Calendar and WP, and I saw another gentleman has the same issue and he fixed it with google_logic.php file. Do you know where can I find it or how can I fix the time difference? At the same time, when I tried to make an an appointment on user's page, after selected time, I can not move on the fill the personal info, the whole part is still grey. However my boss is able to make the appointment on his laptop. I have tried it on different browsers, it still won't work. I also noticed I won't be able to delete some of the custom fields while it will show "error on delete". I hope I made everything understandable. We love your plugin! Best Wished!