I need your help

Hello George,
Thanks for the appreciation. Here are the answers:

1. Explanation option is visible only if
a) Back button is disabled And
b) Answer after each question option is enabled

2. It's working fine at our end. Please share your FTP & Backend login credentials via Contact us form, We'll look into it.

Thanks for your extension. It is realy great
But i have some small problems
1. In the creation form of a question the choice "explanation" does not exist

2. I created a new quiz category, named 'φυσιολογία νεφρού' and creted a new quiz named 'Iga νεφροπάθεια'.
In the Edit Quiz form this category is not displayed as text and i and opted this blindly

Thanks
I appologize for my English