We had a look at your site and it turns out the hosting has a very small maximum size for tables. It turned out that 767 bytes for the email table is too big for your hosting. So we reduced the email field from 255 to 100 characters long in the installer for you specifically, and this reduced the size of the table, so the hosting allowed it to be installed.
If you have any issues, please let us know
All the best
Our time is very tight, we work on this for free, have our own businesses and families, so if you are having trouble, please try and find if it is a simple solution using Google or the Joomla.org forums first, then drop us a message and we will do our best to reply as quick as we can.