If you are using a Ledger hardware wallet, Clorio will send all the operations to the device and you will have to confirm them on the device. By Ledger's design, Clorio will never have access to the keys stored on the Ledger, neither it will ever ask your Ledger seed.
The ledger integration on the browser is compatible with most of the Chromium-based browsers since ~v78, but is not enabled by default and therefore not recommended. On Chrome, Chromium and Microsoft Edge with version > 89, the feature is natively enabled by default.
Please make sure that you are using the version
1.0.0-beta.4-0 of Mina Ledger App
On Linux you might need to change some udev rules, but Ledger created this troubleshooting guide from Ledger.
Your Ledger device can derivate many addresses from your seed phrase. This means that your device holds many Mina addresses and not only one. These addresses can be selected by using an index. Common indexes are: 0, 1, 42, 99.
During the login, you have the possibility to select a custom address index like as shown in the following picture. Make sure that your device is unlocked and you have the Mina Ledger App.