I need help setting up port forwarding with a WiFi repeater

Naaaa. This new setup was just too flimsy.
It just wasn't working stable enough.

So with the old repeater In bridge mode, I did act as an extension of the main router, like it was all one big network. So I could indeed finally setup remote viewing.
But if I connected the HDHR to the repeaters port. It would get a new IP address every hour exactly on three 30 minute mark, so 12:30, 1:30, 2:30, etc.. So every time it got a new IP address, Channels Server would have to refresh everything and reconnect to the new IP address. It did so quickly, but every hour it would interrupt the current recording, and live viewing would stop n freeze.
So I tried not couldn't find a way to stop this.
Funny it was only the HDHR that this happened to. Even the other hard wired device, my CM DVR+, didn't change IP addresses.

So as that kept happening every hour. I tried connecting the HDHR to my PCs Ethernet port, (cause I get internet for it through WiFi so the port can be shared)..
So that actually solved this issue, that it was not changing IP addresses now every hour anymore. But all day today I tried to setup to work. But my Android TV client app would keep freezing every half hour. Then when I tried checking some settings it became every 15 minutes.

So I finally just gave up on this whole setup.
Cause while I did get Remote viewing to work, I sacrificed my system stability that I had till now.
I used to have a live TV buffer of 20 hours or more on this same Android client app. And I never had it freeze or crash every few minutes like that.
So I just put everything back to the way it was. Back to the WavLink router in WISP mode. So back to not having the remote viewing option, sadly... But at least I have my stability back. Which is way more important to me.

Thanks for the help guys.
I'll keep trying....
But for now stability wins out

The DHCP lease time is probably set to every hour on the main router you can change that to Forever.

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I saw no DHCP settings on the Optimum router

Look under Connection ... local ip settings or something like that.

Na I'm telling you the is nothing. Zero DHCP settings.
It sucks.
I think I read online that optimum orders DHCP settings only for business Customers with a high speed. .... Idk.

I'll post photos the router settings page. You'll see. There is nothing

Here are ALL the settings....




Yeah from what I read on optimum devises is they had an update that removed most of the settings to default an ip on your local lan. Some said you could limit the End IP Address to like .200 and you can then hard code IP addresses above 200 on your devices. But I don't think the HDHR will let you set that on its end. So you would still be screwed on that.

Yeah I think you are at the point where you have to give up trying to force a square peg in a round hole. Unless you are friendly enough with your landlord that they will let you put your HDHR and maybe a dedicated Pi server on on their floor. Then you access it from your repeater or out in internet land. Investment for the Pi, but weigh that against the cost for your own internet connection per month... Otherwise you are going to have to architect your network in a more stable, traditional way.

Ya for now, being back to my previous setup feels a lot better. I switched everything back to the Wavlink, so remote viewing is gone. But at least I don't keep freezing and getting bumped off every few minutes.
At this point I've been running my Android TV app for 24 hours straight! Still connected, still watching! Still working! (Although my buffer isn't as long cause I'm running out of memory at around 18 hours).

But it just feels good to be back to steady and stable. Makes me realize how lucky I was getting everything to work that well, on such a less than optimal setup.
Remote viewing will just have to be that one little price I pay... I guess.

Have you tried an overlay network like https://tailscale.com/ ?