Wifi issues troubleshooting

I got a few handhelds from the 11/11 sale and am experiencing some issues trying to get them connected to my home wifi.

At first, I thought it was just the Miyoo a30 because there were a lot of posts that seemed to have the same problem. After updating the firmware, which seemed to fix it for everyone else, it still isn't connecting. There aren't any special characters in the name or password either.

Then, I just got my Trimui Brick, which is now doing the exact same thing. I know my home network works in general. After doing more troubleshooting with the new device, I found out that it will connect, no problem, to my phone hotspot.

Then I went back to the miyoo a30 and sure enough, that also connects to my hotspot but still not my home wifi.

The third device I got was an rg35xxsp, which connected to my home wifi, first try, no issues.

My question is, what aspect of my home wifi could possible be incompatible with these devices? I have an eero setup on TDS which is my only option in my apartment.

Any thoughts/help would be greatly appreciated!