I made a comment on the previous person reporting this but here is my update. I said that maybe 10% of our customers where not getting confirmation emails, and that 5% where making payments on PayPal but no bookings where made. I am using the Connect (Beta) Version 0.9.1 It is now closer to around 30-50% are not receiving emails.  We have to check each email appointment and search for it and then edit and check 'send confirmation' for each booking.  We have 10-15 bookings a day so this is becoming time consuming to do manually what used to be automatic.   I notice that this happened around version 1.12.0 or 1.12.1 but I assumed that it was our customers not checking junk folders.  Also around the time wordpress updated.  So I downgraded wordpress.  Still had the problem (in fact this is when it increased) I have checked all the settings even though nothing has changed and it has been working fine for the months previous (issue is about 30-45 days old).  This does not happen all the time, sometimes the booking guest gets a confirmation and sometimes they do not.  I am unable to determine what the difference between them are. I would like to rollback the plugin as soon as possible, but you do not list on your information where I can get previous versions.   Thanks in Advance