@Julian2111 Ok, yes there has been a bit of an issue with the SFP ports which should be fixed, but RJ45 should work. I use the SFP+ port connected to a SG2428P with a unifi DAC cable and have no...

@Julian2111 how did you connect the ER8411 to the switch?

@Lmca76 When you update manually does the correct IP come to the router? have you tried restarting the router? I have NO-IP on all my routers, also ER605v2 routers but they have never failed so it...

@DavidAbrams Ok, then support is probably working on your problem, but you can test out version 1.4.1 prerelease and see if that helps....

@DavidAbrams What hardware version and firmware do you have on the access point?

@Lmca76 I have used NO-IP for over 5 years, it has never failed so I thought it sounded strange. You can try setting the Update Interval to 5 minutes, if you have long Update Interval then it takes...