Have a 3810X Roku Streaming Stick. I lost my internet for about 20 min everything else in the house is up except the roku.
When I check it I get Wireless connection good, Internet connection Poor. error 018
I have reset it, restarted it, unplugged and replugged it in.
Nothing physically changed in either the modem or the roku. it was all outside the house.
Thanks for the inquiry.
We would recommend taking a look at the troubleshooting steps regarding that error code on our Support page here: What should I do if I cannot connect to my home network or the internet?
Please keep us posted what you find out.