21:00.0 Network controller: Broadcom Inc. and subsidiaries BCM4352 802.11ac Dual Band Wireless Network Adapter (rev 03)

It’s probably related to this recent issue

In my experience Broadcom on Linux is a bad omen, second only to Nvidia. If you can, I’d recommend switching your Wi-Fi card for one that has better Linux support (e.g. “TP-Link Archer TX3000E” or anything that uses an Intel chip inside really since support for them is handled directly by Intel and integrated into Linux’s source code). Good luck! :)

Make sure that your device is not ‘rooted’. If the operating system is an Android variant (also called a ‘custom ROM’), such as LineageOS or Pixel Experience, then the wero app can’t be installed for security reasons.

(cf. https://support.wero-wallet.eu/hc/en-us/articles/25599098295313-I-m-seeing-this-error-message-Your-device-does-not-meet-our-security-requirements)

I can’t use it but it looks neat! I hope these companies will one day realise that requiring the user’s device to be an opaque jail controlled by a usually foreign third-party isn’t good security practice :/