Hi,
See if the username field is enabled in HikaShop > Display > Custom Fields.
Edit the translation file, and add/edit the value for "HIKA_USER_DETAILS". (HikaShop > Configuration > Languages)
For the carrousel, try to set it on 3 columns, you can remove the arrow with the following property:
.art-postcontent ul > li{
display: none;
}
To get a licence of HikaShop Business you just have to go in the tab download and then bought the wanted version.
(I think that you found how to buy it, you have created two order, but not confirmed them).