@DWMills, I don't know why some people have a problem with the email activation. The message is saying everything went ok until Roku tried to send the email to you. They got back some kind of error message when they tried to send the email. It could just be a temporary glitch, so give it a few more tries. I would normally say to try another email address, but if you already have an established Roku account that's not a good solution (unless you want to change the current email address on the account). If you give it a few more tries in the next day or two and you keep getting the same message try reaching out to one of the moderators (the RokuXxxx people) or the dreaded official support - https://support.roku.com/contactus/
I have completed the setup on my cell phone and my tablet but I'm not getting a link code on my TV
@TexasAngel, Roku no longer uses link codes to set up a Roku device. What exactly are you trying to do?