Step 1: Reducing the Hyperoptic Wifi network name length
In your phone's Settings> Wifi network settings >List of networks you may see a network name such as this:

To adjust the length of this network name you will need to access your router settings.
The link below will take you to Hyperoptics support page that clearly describes how this can be undertaken:
https://www.hyperoptic.com/faq/posts/changing-the-wifi-name-ssid-and-password/
As long as there are no further issues as in Step 2 below, you should now be able to connect successfully.
Step 2: Selecting another authentication type that's compatible with our device
Our products can work with WPA and WPA2-PSK types with WEP, TKIP and AES encryption.
WPA/WPA2-PSK is often referred to as “mixed mode”. This is a security configuration that allows both WPA and WPA2 security at the same time. This is less secure than just WPA2 and should only be used if the user has devices that can only connect with WPA. Using this mixed mode may even slow down your whole Wi-Fi network to ensure compatibility with older devices. We recommend WPA2-PSK for our device.
The Hyperhub however has an added extra security type called WPA2-EAP, although less common than the other types mentioned, our Wi-Fi connected products do not work with this WPA2 EAP type.
If your Hyperoptic router has this security type enabled, our device cannot connect until one of the other compatible types mentioned are selected instead.
Hyperoptic support
https://hyperoptic.com/support/