Have you followed troubleshooting steps?
Yes
Great, please provide details for each step you've done.
I am still working on this issue. I have a MV400G by micodus . I tried all the troubleshooting steps. This link is what the protocol is: https://www.micodus.com/uploadfiles/files/0d/0da1e793e8-mv400g-full-sms-commands-list.pdf
Actually 5064 works after further testing
I have been trying to get TK319 (MV401G ) working. It appears to be using the eelink protocol 2 . Ports 5046, 5013, 5016 etc are not working. Has anyone had any luck on this?