I'm having some big issues with Easy Appointments. First of all the appointments aren't visible in the back-end in Wordpress.... Second the clients that made an appointment aren't receiving any Email.  There are also a few errors showing on the Tools page stating. (someone else already stated  this on your help page. ) “Mail error You must provide at least one recipient email address.” I’ve already did some research too, but I can't find any solution... Then last but not least the agenda isn't syncing with my Google Calender. Please help I'm Clueless, because it did work before. Thanks in advance!