2.4 ghz device unable to see new eero wifi

[CarolineK5]

I upgraded to full fibre and an eero 6, and have all my devices connected except one. This is a wifi enabled cat flap which was fine on my previous router. However despite trying legacy mode, or disabling 5 ghz it can't see my network and I can't add it using Other. I am in contact with the device's suppliers, but thought it worth asking here if anyone has experienced this or has any ideas? I was also unable to connect it to my laptop via hotspot although the device could see the laptop hotspot and the laptop could see the device. 

[Debbie-TalkTalk]

Thanks for your reply. @CarolineK5 

Are you able to offer any additional advice @KeithFrench 

KeithFrench is one of our valued Community Stars and can help with a range of issues related to wireless and networking. At times he may ask you to send him test results via a Private Message to help analyse/diagnose an issue.  Although Keith does not work for TalkTalk, he very kindly shares his time and knowledge to help with others.  If you need further help or, if we need to take any details such as personal information about your account like phone numbers, account numbers etc.  one of the TalkTalk team will jump in and help out.

[CarolineK5]

Hi I have already tried that and also the legacy option, several times, nothing works thank you

[CarolineK5]

Sorry tried that and also legacy and it does not see the wifi thank you

[Debbie-TalkTalk]

Hi CarolineK5

I can see that ferguson has offered some advice. How are you getting on?

[ferguson]

Open the eero app and go to Settings > Troubleshooting > My device won't connect and select My device is 2.4GHz only and your Eero system will temporarily pause the 5GHz band to help you get connected. Let us know if that works.