Hi,
Unfortunately, no we are not working on the update.
The servired plugin has not been developed by the HikaShop team ; so we do not have any documentation or test account.
You can find the details about the servired plugin author in the plugin XML :
<author>Webemus based on Hikashop bluepaid plugin</author>
<authorEmail>info@webemus.com</authorEmail>
<authorUrl>http://www.webemus.com</authorUrl>
<copyright>Copyright (C) 2010 Webemus - All rights reserved.</copyright>
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.