Sounds like a network issue. Try unplugging your modem, then router, then switch. Then plug each back in (in the same order) waiting for each to restart.

Note: You will have a modem. You MIGHT have a router. You may also have a network switch (but it's unlikely).

If you're not able to download them properly and install, you may need to contact support. Maybe there's an issue on their end with a corrupt version. I downloaded Bloodrayne 2 last year and it worked fine. I don't know if they've uploaded a new version since then.

If it still won't work after all that, they offer a refund for just that type of issue.