Hello,
The order custom fields are provided by HikaShop Business.
Your subscription expired and you decided to install the starter edition ; so the Business features has been deactivated.
So yes, you need to renew (or re-buy if it's expired for too long) HikaShop Business to retrieve the order custom fields and the other Business features.
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.