Friend trying to create account and same message appearing saying - we cannot process your request

This sounds like an internet problem.
It may also be a problem with the country your friend is in.
Moderators have no access to technical data, so no-one in the forums would be able to resolve this.

I suggest that you create a customer support ticket Follow the link then click the beside "Open a new ticket"
Give them all the details you can, such as your friend's country of origin, the exact date and time when the attempt was made and so on.

You will need to do this, since your friend won't be able to.

Hi there, my friend lives in England and has a strong internet connection?

Can't understand why there'd be an issue?

Thanks very much for your guidance but I don't understand how to follow it?

Could you explain?

Thanks

Just click this link: customer support ticket
Once you're there look for "Open a new ticket" then click the beside those words.

When your friend gets that message, could you perhaps take a screenshot, post it to a sharing site, and post the link here.
There might be more information on the screen that might help.

Also, when does this message occur?
If it occurs after filling in the registration page completely, perhaps there is something wrong with the user name and so on. Once again, a screenshot would help.

I'm not customer service though, so even if I know what the problem is, I might not be able to fix it.

Cheers,
VS