Hello,
We can see that you have some old content which would indicate some old view overrides.
The could be fix using a bit of CSS or by remove/redo the override.
Regarding your main question ; I'm afraid that we do not have the knowledge regarding the content ; so we don't know what is that "missing content" nor how it should be display.
We also don't know what was your version before.
So, I can only recommend you to read that pined thread of our support forum (first visible thread in the "install / update" forum section) :
www.hikashop.com/forum/install-update/89...-upgrade.html#294471
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.