AX8 AX5700 (RAX75) Management Software freeze every day along with the AD7000 (R8900)

Thanks Michael for your response.  About the duplicate of post that is honestly not my fault.  Even after selecting the right options from dropdowns, Netgear put my post in wrong place which I do not what is what until someone said, you better off posting this on WiFi 6 blog.  I am in IT industry since 90s and when i design a website I do not make user to guess where the user should be but design such a way, based on the selections I take them to the right place.  That is called "User Friendly!"  I think, Netgear never heard of it, unfortunately!

Anyway, please see my responses in red:

What is your idea of a Wireless Bridge?

All the devices, nowadays, come with both LAN port and built-in wireless, however, built-in wireless have bandwidth limitations.  But, all the LAN ports have Gigabit through put.  Therefore, I use my old routers as Wireless Bridge to bridge two routers wirelessly and use the LAN ports to connect my device with either Cat 5E or Cat 7 cables where I see more than double throughput.  I have R6300 and R7000 bridged for serveral years and they both serve me flawlessly.  But, the problem is with latest and greatest devices from Netgear which are not tested thorougly in my opinion and based on the response I have seen from the support people.

I ask because people turn up here with different interpretations of "bridge", not helped by Netgear's own indiscriminate use of the label.

I explained it above...

You want the R8900 to talk to wifi on the RAX75 and to pass it on to other devices?

Yes, on LAN ports wired.

You want to wire the R8900 to the RAX75 and act as a wifi access point?

No, They are at least 50ft away from each other.  RAX75 is on upper floor in the guest bedroom and the R8900 is in main floor in the living room.  From the same distance, when I upgraded R6300 to R7000, I bridged the R6300 to R7000 and when I upgraded R7000 to R8900, I bridged R7000 to R8900 and had no problems.  I also bridged R6300 from my Master Bedroom to R8900 and now RAX75 and see no issues.  I took my R8900 down yesterday, put my R7000 on main floor again and so far I have not seen freeze.  If this continues then I can tell for sure that R8900 and RAX75 are not compatible to bridge them wirelessly but will have to wait next few days to come to that conclusion.  If that is the case then its a bummer!  

As per Netgear, if I understand it correctly,  when you wirelessly bridge the two routers, it will also link them and I assume it works like a Access point based on the wireless device that is on the network.  NOT SURE!  But, this is what the manual says but I do not care this feature at all and my intention is to make use of gigabit LAN ports:

You have been through everything in the manual for the R8900?

There is nothing special to configure for what I am doing in any of those three routers, all the steps remained same for my purpose.  Whatever additional feature R8900 has it, I am not using them, so it does not matter to me.  Yes, I have went through all the instructions from Netgear!

Also, about the Management software, you cannot rely on Netgear!  There is a day and night difference between, R8900 and RAX75 software.  

No, I don't have anything in front of the RAX75 but behind it has AT&T as the Gigabit Modem and router which supplies internet connection to RAX75.  It is not like anythng else is interfering with the router becasue in the end, I am not new to what i am doing here.  I am doing this for at least 5 years if not more.  Like, I said, the problems started as I start adding devices around the house.  Their firmware as not sophisticated enough to handle many devices and whatever database they have in the firmware it totally useless and that is why you see different statistics about the connected devices from difference interfaces to its Management Portal.  I showed them to the support but they had no answers, I don't even think that they convey these bugs to the engineers, to be honest!  They just want to bring the new technology to the market to make money as much as possible.  I was married to DLink before i tried R6300 from Netgear.  Only, DLink and Netgear has better User Inface for the Management Software.  I rate DLink number one in that perspective, the last rounter i used was DIR-825 and i still have it and use it as a switch by putting DD-WRT firmware in it.  But the sad part of DLink is they have fallen behind the technology and that why I had to switch Netgear but loved the R6300 and R7000 and still use them.