I upgraded the system to the newest version because you told me there was a bug causing people to not be able to access their cancellation page. I upgraded, and early this morning when the sale went live all my time slots were messed up -- you changed the way the buffers work so I had to take it down (creating a terrible customer service experience) so I could setup all the time slots again without using buffers. When I was finally able to get the page back online, now my customer are being told by the system that their email is already in the system and they can't book with their email address. Please help! I have cleared server cache, and nothing is helping. 

In addition to this, I am getting customer who get a link to manage their reservation that can use it once, and then the link becomes invalid the second time they try to use it. 

I am also hearing that my customers are not getting their confirmation emails at all when the appointment gets approved.

The only change was the Amelia Plugin update that you guys had me do. If I do a test, I get the email. But my clients say they are not receiving.