DSM stopped working after the network change.

[Guest]

Xpenology worked fine on the old network. 
I bought a Unifi UDM-PRO and after creating another IP pool, I assigned fixed addresses for TinyCore and Xpenology. 
I can only access files via SMB on windows, DSM stopped working and when I go to ipaddress:5000, a Synology error page appears: "Sorry, the page you are looking for was not found."
Is there any way to fix this?

[rojoone2]

Did you setup a VLAN just for the DSM? Was it a guest VLAN or corporate VLAN?

If it is a guest VLAN, you should change it to a corporate one instead and create firewall rules to allow the main VLAN access.

I would just keep the NAS on the same network as your main devices, unless you don't feel safe doing that with an Xpenology device.

 

[Guest]

A simple VLAN, added just like the rest of the VMs in Proxmox.  I tried a lot of stuff and DSM no longer appeared, instead there was a Synology error page.
It doesn't matter, because I had to recover data via SMB anyway, lucky I had it authenticated beforehand. 
Xpenology is not suitable for serious applications, I already bought a used Synology.