I am slow... But, what is actually going on? Is this related to MK 4 wallet?
Yes. Migrate to Trezor Safe 7 or BitKey.
You could flash new firmware on the MK4 and roll 100 dice and add a passphrase and setup multisig, but that's up to you.
You could flash new firmware on the MK4 and roll 100 dice and add a passphrase and setup multisig, but that's up to you.