Please note that we do not actively support hardware wallet integration with the TokenSets product.
While it is possible to connect your hardware wallet (i.e. Ledger/Trezor) to MetaMask through the Chrome extension, there are some known issues with U2F timeouts during purchases and during message signing where it hangs and is stuck forever loading without a resolution. We are waiting for Ledger and/or Chrome to come to a resolution for this issue.
This is especially problematic with more recent versions of Chrome. You may have better luck with different browsers such as Brave or Opera, but we recommend that you transfer your tokens to other wallet solutions such as plain MetaMask accounts, Fortmatic accounts, or various compatible mobile wallets such as (Coinbase Wallet, imToken, MetaMask Mobile, TrustWallet, etc.) for a better user experience.