I've been using nitrogensports for a while now and everything seems to be fine until i tried to withdrawal my bitcoins for the first time.
I filled everything correctly in using the right bitcoin address, password and one time password. But when i try to confirm my withdrawal it gives me the message
''The address you entered does not appear to be valid. Please check the address again, or contact support for assistance'' i'm pretty sure i am using the right address,
I'm directly copying it from my electrum wallet receiving address. I tried to get in contact with customer support and they wrote:

''Thank you for taking the time to contact us.

Unfortunately, we are unable to verify if the address you are entering is correct or not.

Please remember that Blockchain works as an independent platform and Nitrogen Sports does not have any ability to check that information on your behalf.

I will definitely suggest you to check with your wallet service what the issue could be.

We are at your service if you need anything from our end.

Regards,
Ella Q.

sooo what am i supposed to do here? I am sure i'm using the right address. Am i doing something wrong here?