you cannot get a refund if you've already registered Bandicam.
Bandisoft wrote:2. If the serial number is registered
A refund will be impossible, considering the characteristics of the software.
(fetched from here
But instead of that, why don't you try to have your issue fixed?
Please take a quick look into the tips on how to get your Bandicam-issues solved (better known as forum rules)
The Bandisoft team aka the Bandicam Company will help you fix your issues for sure!
Until Bandisoft replies to your thread, please take a look into the FAQ
and search the forum
for people having the same issue.
Have a nice day and best regards,
Thank you for reading my post. I hope you understand my "English".
I'm the German translator for some of Bandisoft's products and websites
(mostly Bandicut and Honeycam).