Hello,
HikaSubscription (please do not use "HS" because we can't know if you're talking about HikaShop or HikaSerial or HikaSubscription !) is installed in our demo website.
Afterwards, I don't understand what you're talking about the email and the proposal ; but please understand that the component is currently under a beta program since we need some feedback on the actual interfaces.
So we cannot provide support for that component before its release.
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.