Hello,
Can you please check the status of your subscription ?
The order need to be "confirmed" to make the subscription "active".
When the subscription is "active", the plugin "groupsubscriber" will give the group member to the corresponding customer ; when the subscription expires (or closes), the group member is removed.
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.