I’m totally insane with Roon. every time after an update I can no longer play music because I no longer see Roon on my iPad. what am I doing wrong. I never had that before.
I have to say that I’m having a Nucleus Plus. But I also have an old MacMini, and that is always working. What a shame.
Problems are never fun. Is your IPad still enabled in Roon settings?
@FDD, so Roon and the Community can provide better support, can you please complete the following information about your Roon system:
Include your operating system and machine info (Model, CPU, RAM)
Your network gear (model of routers/switches) and if on WiFi/Ethernet
Specify what devices you’re using and their connection types, like USB/HDMI/Chromecast, etc.
Tell us how large your music library is, eg. “30,000 tracks”
Tell us about the problem you’re having in as much detail as possible. Screenshots are always appreciated!
Good morning,
I tried everything, but on one moment I decided to look in the portal of my router.
There I saw that the Nucleus was online, but on an other ip number.
So with this info I could once again connect with the Nucleus and play music.
Very strange.
Not strange at all. This is is basically DHCP at work. Your router assigns an ip address to devices. When the lease is renewed within the lease time, the same ip address will be reassigned, but when this is not the case, a different ip address may be chosen.
Depending on your router, you may be able to permanently reserve an ip address for one or more devices.
To add to this. A permanent IP address is being called a static IP.
A device using a static ip does not rely on DHCP. A static ip is set on the device itself. That is also a possibility, but you must then ensure that the assigned static ip is excluded from the DHCP range on the router.
Well, to be pedantic, a static IP address is usually taken to mean a fixed address that is set up on the device itself, whereas a reserved address means that the same address is assigned by the DHCP server (usually in the router) to the same device every time the address lease is renewed by the server…
It is best to set reserved IP addresses in your DHCP server.
Or only assign addresses on hosts not in the DHCP range.
Having addresses static on a host within the DHCP address range is an accident waiting to happen.
Behave or I’ll set IP Man on you 
And not to be picky.
Depending on your network gear, such as Unifi, it’s referred to as fixed IP address via the router settings.
As for the OPs query, even when my router DHCP assigns new IPs, I have never had issues with accessing Roon from a remote.
Could @FDD explain a bit more and fill in the support template. 
Hi everybody,
Thanks for all your info.
Roon is still working so the problem is solved.
I think it has to do with my router.
That is a TP-Link Archer C5400.
I now have a stitic ip adress reserved for the nucleusplus.
Have a great day,
Frans
Reserved is best as it means if the dhcp range or server changed your stuff still works. This is the best case if you switch routers as all the hardware would need reconfiguring as they all tend to use different address ranges. Many users been caught out by this having rock on a fixed IP set on the device and changed network hardware and it no longer works or can connect to it.
Only recently they changed the terminology of fixed it used to be reserved. No idea why they changed it as it’s reserved not fixed.
Completely agree.
Change of terminology makes it trickier to offer assistance 
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