iPad 2 unable to connect to eero mesh wifi network - solved by turning of WPA3 experimental setting in eero

I set up an eero mesh wifi network in June 2020 and it worked very well and all my Apple devices and other devices connected to it without a problem. Then, in July 2020, the iPad 2 would not connect. Tried all the online solutions for iPad wifi problems, including a DFU reset. I had also reset the eero network, but nothing worked. Finally solved when I dug a bit deeper into my eero network's advanced settings and under the "Discover" tab, and I found that I had turned on an "eero labs" experimental feature for WPA3 security. This feature is billed as "Provide added security for devices that support the WPA3 standard." Well, it also prevented the iPad 2 from connecting, as this feature apparently interferes with devices that do not support the WPA3 standard. After disabling this WPA3 feature on the eero network, the iPad 2 connected immediately.