The following link provides information on temporarily disabling the 5 GHz band, to allow the hub to easily connect to the 2.4 GHz band.    https://www.tp-link.com/us/support/faq/3311/

Are you having trouble connecting your YoLink hub to your WiFi network? Do you also have a dual band router (i.e. 2.4 GHz and 5 GHz) or mesh system (Google Nest WiFi, Amazon eero, etc.)? The problem might be that your YoLink Hub is only able to connect using a 2.4 GHz WiFi band.   Many dual band routers and mesh systems broadcast both frequencies and some routers don’t allow you to select the broadcast frequency. Connecting your hub via ethernet cable is one way around this but it is not a perfect solution for everyone. Here are some other solutions for this common issue:   STEP 1: Turn off the 5 GHz band. In your router configuration settings, find the 5 GHz settings and temporarily disable this option. Complete setup via the YoLink app. Once setup is complete, re-enable the 5 GHz band. The YoLink hub will automatically connect to your network using the 2.4 GHz band. STEP 2: Move your phone or tablet farther away from your router during setup. 2.4 GHz frequencies have a longer range than 5 GHz. Moving out of range of the 5 GHz band will allow your phone or tablet to connect to the 2.4...

Eero router users can temporarily turn off the 5 GHz band, which may be needed to connect your SpeakerHub to your WiFi.  https://support.eero.com/hc/en-us/articles/360049983772-How-Do-I-Temporarily-Hide-the-5GHz-Band-on-My-eero-Network-

  Existing customers:  If you plan to add a SpeakerHub to your account, please ensure the app has been updated to the newest version. 

  With the April 14, 2022 update, 1.10.5, you can now upload your own custom audio files for use by your SpeakerHub! See the video for more info: https://youtu.be/OUD2ASg39HQ