@iansmcdonald 

Do you have access to Deco app? Deco mesh is managed by Deco app. If you do not have login credentials to login to Deco app and see your Deco mesh, there is not much you can do.

  @Alexandre. 
"Do you have access to Deco app? Deco mesh is managed by Deco app. If you do not have login credentials to login to Deco app and see your Deco mesh, there is not much you can do."

Yes I do, no problem.

There is no option to do anything like port forwarding or dhcp ip address allocation.
That's my problem.

 

  @iansmcdonald 

You can configure static IP addresses in Deco mesh, here is how: How to configure Address Reservation on a Deco

Remove static IP address setup on devices, they should be requesting IP address from Deco where you reserved it. Device with static IP configured on it may become invisible to Deco and could cause IP conflicts in the future.

There is also method to configure port forwarding. Just look around for documentation on that topic, but this feature is present.

Unfortunately, Deco mesh does not offer DMZ.

  @iansmcdonald You can set the DHCP range via the app: More, Advanced, DHCP Server.

If you want to configure the DHCP to assign static IP addresses to some clients, be aware that the Deco app will only accept assigning static IP addresses from the DHCP pool.

It is possible, after those static IP are assigned, to modify the range of the DHCP pool. 

  @yves_b I tried changing my DHCP range it would only accept. 68.....

I wanted to change it to 196.168.0.xxx 

won't let me

  @maxxxhirz your default router IP is 192.168.68.1 and your subnet mask is 255.255.252.0 (ie. 22 bits not 24 as is common) therefore allowable addresses on your network are 192.168.68.1 to 192.168.71.254.

I recommend sticking with the defaults myself so I would set the DHCP range to start at 192.168.68.100 to 192.168.71.250 leaving 192.168.68.2 to 192.168.68.99 to use for static address set on devices. If you don't have too many devices that need to have known addresses not changing the range and adding DHCP reservations (as was recommended) is a good option. Note that a DHCP reservation has an interesting side effect, it prevents any devices other than the one with the specified MAC address from being offered that IP address so if the device with that MAC address has it's address set on the device itself it's ok (as long as everything matches).

If you do have a large number of devices that have addresses set on the device itself that are in a different subnet and you want to keep them set like that you must change the address of the router, usually set to the first non zero address in the subnet address range. For example, if you wanted to set the dhcp range to start at 192.168.0.100 you would need to set the router address to 192.168.0.1 and leave the subnet mask as is at 255.255.252.0, (not 255.255.255.0 as you normally see because that is not the router default and support may make incorrect assumptions if you need to request help). Then your subnet would be 192.168.0.0/22 (ie. 192.168.0.1 - 192.168.3.254), default gateway 192.168.0.1, broadcast 192.168.3.255, host addresses 1022.

  @iansmcdonald sorry but you may find what I said a bit confusing in the same way that looking back at what you have said I find confusing.

You say you your router address is 192.168.1.1 it can't be unless you changed it and the router firmware was dumb enough to not change your DHCP range or you didn't actually save it (which would have required a reboot).

You say you want to change the DHCP range to 192.168.0.100 which doesn't match the retirements of either of the subnets you might have ... re-read my previous post until you understand what the subnet restrictions are and why they exist so you can understand the choices you have.