Hello,
We would require more details about the actual configuration of the HikaShop payment plugin instance and a way to test the plugin.
Best would be to have an instance set with a test account so we could use Stripe test cards and see what could cause that long wait.
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.